a cluster analysis on income elasticity variations and us pharmaceutical expenditures this paper examines the relationship between household income and outpatient prescribed medicines in the usa based on a sample of 2872 privately insured patients from the 1987 nmes data set the analysis is performed on regional typologies of different socioeconomic profiles of patients only a few groups show positive income elasticity

what drives health care expenditure baumol s model of unbalanced growth revisited the share of health care expenditure in gdp rises rapidly in virtually all oecd countries causing increasing concern among politicians and the general public yet economists have to date failed to reach an agreement on what the main determinants of this development are this paper revisits baumol s baumol w j 1967 macroeconomics of unbalanced growth the anatomy of urban crisis american economic review 57 3 415 426 model of unbalanced growth showing that the latter offers a ready explanation for the observed inexorable rise in health care expenditure the main implication of baumol s model in this context is that health care expenditure is driven by wage increases in excess of productivity growth this hypothesis is tested empirically using data from a panel of 19 oecd countries our tests yield robust evidence in favor of baumol s theory

interrelationships between income health and the environment extending the environmental kuznets curve hypothesis abstract this paper examines the link between the health indicators and the environmental variables for a cross section of countries widely dispersed on the economic development spectrum while environment and income are seen to have an inverted u shaped relationship environmental kuznets curve ekc hypothesis it is also well established that environment and health are positively related our study focuses on the implications of this for the relationship between health and income in the early phases of income growth the gains in health and the losses in environmental quality could cancel each other out and this challenges the idea that as incomes increase health would always improve to empirically analyse these issues we estimate a two stage least squares model that focuses on the impact of income and the environment on health status with environment being an endogenous variable our results show that the environmental stress variable has a significant negative effect on health status at the same time gross national product gnp levels are shown to vary positively with health status variables we find that the health gains obtained through improved incomes can be negated to a significant extent if the indirect effect of income acting via the environment is ignored research findings in this regard would be a useful policy instrument towards maximising both the environmental and health gains that come with economic growth and development

household risk management and optimal mortgage choice the portfolio of the typical american household is quite unlike the diversie ed portfolio of liquid assets discussed in e nance textbooks the major asset in the portfolio is a house a relatively illiquid asset with an uncertain capital value the value of the house generally exceeds the net worth of the household which e nances its homeownership through a mortgage contract to create a leveraged position in residential real estate other e nancial assets and liabilities are typically far less important than the house and its associated mortgage contract the importance of housing in household wealth is illustrated in figure i this e gure plots the fraction of household assets in housing and in equities against the wealth percentile of the household poor households appear at the left of the e gure and wealthy households at the right data come from the 1989 and 1998 survey of consumer finances the e gure shows that middle class american families from roughly the fortieth to the eightieth percentile of the wealth distribution have more than half their assets in the form of housing even after the expansion of equity ownership during the 1990s equities are of negligible importance for these households 1

prepayment and the valuation of mortgage backed securities this paper puts forward a valuation framework for mortgage backed securities rather than imposing an optimal value minimizing call condition we assume that at each point in time there exists a probability of prepaying this conditional probability depends upon the prevailing state of the economy to implement our valuation procedure we use maximum likelihood techniques to estimate a prepayment function in light of recent aggregate gnma prepayment experience by integrating this empirical prepayment function into our valuation framework we provide a complete model to value mortgagebacked securities given an optimal value minimizing call policy a mortgage should never be called when its market value is less than its call price similarly a mortgage should be called if it is worth more than its call price however mortgagors often call their loans when the prevailing refinancing rate exceeds the contract rate on the loan dunn and mcconnell 1981 in addition some mortgagors do not call their loans when the loan s contract rate exceeds the prevailing refinancing rate the purpose of this paper is to put forward a valuation framework for mortgagebacked securities consistent with these stylized facts associated with mortgage prepayments the mortgagor s prepayment decision is integral to our valuation framework however we do not impose an optimal value minimizing call condition to price these securities rather we assume that at each point in time there exists a probability of prepaying this conditional probability depending upon the prevailing state of the economy by integrating this prepayment function into our valuation framework we provide a complete model to value mortgage backed securities to implement our valuation procedures we estimate a prepayment function given recent gnma prepayment experience we follow green and shoven 1986 by using a proportional hazards model to estimate the influence of various explanatory variables or covariates on the mortgagor s prepayment decision distinct from green and shoven we explicitly model the effects of seasoning as well as investigating the influence of interest cost savings from refinancing in addition we also consider the effects of lagged refinancing rates heterogeneity

equity in the finance of health care some international comparisons this paper presents the results of a ten country comparative study of health care financing systems and their progressivity characteristics it distinguishes between the tax financed systems of denmark portugal and the u k the social insurance systems of france the netherlands and spain and the predominantly private systems of switzerland and the u s it concludes that tax financed systems tend to be proportional or mildly progressive that social insurance systems are regressive and that private systems are even more regressive out of pocket payments are in most countries an especially regressive means of raising health care revenues

house prices home equity based borrowing and the u s household leverage crisis us household leverage sharply increased in the years preceding the 2007 eco nomic recession the top panel of figure 1 shows the steady rise in household debt since 1975 which accelerated beginning in 2002 in just five years the household sector doubled its debt balance in comparison the contemporaneous increase in corporate debt was modest the middle panel shows that the increase in household debt from 2002 to 2007 translated into a striking rise in household leverage as mea sured by the debt to income ratio during the same time period corporate leverage declined the dramatic absolute and relative rise in us household leverage from 2002 to 2007 is unprecedented compared to the last 25 years one reason for the rapid expansion in household leverage during this period is that mortgage credit became more easily available to new home buyers mian and sufi 2009 strong house price appreciation from 2002 to 2006 however which may have been fueled by the availability of mortgage credit to a riskier set of new home buyers could also have had an important feedback effect on household lever age through existing homeowners given that 65 percent of us households already owned their primary residence before the acceleration in house prices the feedback from house prices to borrowing may be an important source of the rapid rise in household leverage that preceded the economic downturn our central goals in this study are to estimate how homeowner borrowing responded to the increase in house prices and to identify which homeowners responded most aggressively we examine this home equity based borrowing channel using a dataset consisting of anonymous individual credit files of a national consumer credit bureau agency we follow a random sample of over 74 000 us homeowners who owned their homes as of 1997 at an annual frequency from the end of 1997 until the end of 2008 the bottom panel of figure 1 plots the growth in debt of 1997 homeowners over time and shows that existing homeowners borrow significantly more debt as their house prices appreciate from 2002 to 2006 while the aggregate trend is suggestive

lender screening and the role of securitization evidence from prime and subprime mortgage markets this article examines the link between mortgage securitization and lender screening during the boom and bust of the u s housing market using comprehensive data on both prime and subprime securitized and bank held loans we provide evidence that securitization affected lenders screening decisions in the subprime market for low documentation loans through two channels the securitization rate and the time it takes to securitize a loan the change in decision making by subprime lenders occurs on dimensions that are unreported to investors examining the time series evolution of the securitization market further reinforces these findings we exploit heterogeneity across subprime and prime markets to illustrate that the potential for moral hazard may be reduced with greater collection of hard information and increased monitoring of lenders our results suggest that the policy debate regarding securitization and lenders underwriting standards should separately evaluate the agency and non agency markets with special attention toward the extent of soft information in assets being securitized the author 2012 published by oxford university press on behalf of the society for financial studies all rights reserved for permissions please e mail journals permissions oup com oxford university press

can baumol s model of unbalanced growth contribute to explaining the secular rise in health care expenditure an alternative test in a recent paper i argued that baumol s model of unbalanced growth offers a ready explanation for the observed secular rise in health care expenditure hce in rich countries baumol s model implies that hce is driven by wage increases in excess of productivity growth i tested this hypothesis empirically using data from a panel of 19 organization for economic cooperation and development oecd countries and found robust evidence in favour of baumol s theory an alternative way to test baumol s theory is to check whether its implication that variations in the relative price of medical care contribute significantly to explaining variations in health expenditure in the same direction has an empirical grounding earlier studies although mostly not in an explicit attempt to test baumol s theory have occasionally rejected this hypothesis despite poor data quality of the available medical price indices i perform the alternative test using data for nine oecd countries my findings suggest that the relat

rational prepayment and the valuation of mortgage backed securities this article presents a new model of mortgage prepayments based on rational decisions by mortgage holders these mortgage bolders face beterogeneous transaction costs which are explicitly modeled the model is estimated using a version of hansen s 1982 generalized method of moments and is sbown to capture many of the empirical features of mortgage prepayment estimation results indicate that mortgage holders act as tbougb tbey face transaction costs tbat far exceed tbe explicit costs usually incurred on refinancing they also wait an average of more than a year before refinancing even when it is optimal to do so the model fits observed prepayment behavior as well as thee recent empirical model of schwartz and torous 1989 implications for pricing mortgage backed securities are discussed

social security income and health care spending evidence from the social security notch the paper exploits social security legislation changes to identify the causal effect of social security income on out of pocket medical expenditures of the elderly using the 1986 1994 consumer expenditure survey and an instrumental variables strategy the empirical results show that health care expenditures are responsive to changes in social security income for elderly individuals with less than a high school education the estimated income elasticities are between 1 41 and 3 47 depending on the outcome measures and are statistically significant at conventional levels the findings are in contrast to existing studies that find a small income elasticity at the individual household level this article is protected by copyright all rights reserved

does morbidity matter perceived health status in explaining the share of healthcare expenditures we argue that the demand for healthcare services can be better explained by individual need based variables rather than by macro variables such as the gross domestic product gdp per capita and the share of public healthcare expenditures this study introduces a self rated health variable called morbidity that describes individual needs for health care healthy individuals need less health care than sick ones and that is measured through personal interviews conducted by the organization for economic co operation and development oecd in addition stationary properties of the series are considered in order to understand the effect of shocks to expenditure behaviour on health care stationary test results show that we should not only use differenced values for the model variables but also incorporate time specific effects into the model using the appropriate specification and accounting for the time effect we find evidence supporting the hypothesis that the share of healthcare expenditure in gdp ris

the determinants of canadian provincial health expenditures evidence from a dynamic panel this article seeks to reveal the magnitude of the income elasticity of health expenditure and the impact of non income determinants of health expenditure across canada for this purpose panel data on gross domestic product the relative price of health care the share of publicly funded health expenditure the share of senior population and the life expectancy at birth have been used to investigate the determinants of canadian provincial health expenditures over a 28 year period dynamic models of health expenditure are analysed via generalized instrumental variables giv and generalized method of moments gmm results indicate that the long run income elasticity of health expenditure is substantially lower than one thus health care is far from being a luxury in canada

mortgage valuation under optimal prepayment mortgage originators offer borrowers various combinations of points loan fees and coupon high points and low coupon or low points and high coupon in this article points are interpreted as a device serving to separate borrowers with high prepayment probabilities from those with low prepayment probabilities borrowers and lenders are treated symmetrically both are risk neutral and both have complete and frictionless access to credit markets implying that borrowers can finance points if they wish except that borrowers prepayment speeds are private knowledge equilibria are derived both when borrowers cannot prepay voluntarily and when they can article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

demand for medical care consumption and cointegration abstract this paper considers a generalized version of grossman s health capital model and derives a cointegration restriction the restriction is tested using aggregate us data and the results are consistent with the prediction of the model

a generalized valuation model for fixed rate residential mortgages this paper uses option pricing techniques to rationally price mortgage instruments subject to both default and prepayment risk attention is given to terminations due to purely financial consideration of the mortgage contract itself as well as to personally induced terminations explicit inclusion of default in the mortgage valuation procedure also permits the valuation of insurance against such default qualitatively it is found that default differs significantly in the behavior from either prepayment or nonfinancial termination quantitatively however there is significant substitution between prepayment and default so that the addition of a default feature to the contract has only a modest impact on mortgage values unless there is substantial price volatility in the housing market or a high loan to value ratio copyright 1992 by ohio state university press

price and quantity in international comparisons of health care expenditure an important omission from earlier cross national comparisons of health care expenditure has been the failure to distinguish between price and quantity using recent data on purchasing power parities the purpose of this article is to report some preliminary results regarding health care expenditure and quantity across 22 oecd countries the article concludes that contrary to what has been suggested in some recent articles the relative price of health care is not correlated to the aggregate per capita income the fraction of the national income that is devoted to health care provision increases with the per capita income regardless of whether health care is measured in terms of expenditure or quantity the relative price of health care has a rationing effect on the quantity of health care that is offered with a price alasticity close to minus one the latter finding means that the health care expenditure is not greater in countries with higherprices furthermore the differences in health care expendit

mortgage terminations heterogeneity and the exercise of mortgage options as applied to the behavior of homeowners with mortgages option theoiy predicts that mortgage prepayment or default will be exercised if the call or put option is in the money by some specific amount our analysis tests the extent to which the option approach can explain default and prepayment behavior evaluates the practical importance of modeling both options simultaneouisly and models the unobserved heterogeneity of borrowers in the home mortgage market the paper presents a uinified model of the competing risks of mortgage termination by prepayment and default considering the two hazards as dependent competing risks that are estimated jointly it also accounts for the unobserved heterogeneity among borrowers and estimates the unobserved heterogeneity simultaneously with the parameters and baseline hazards associated with prepayment and default functions our results show that the option model in its most straightfolward version does a good job of explaininig default and prepayment but it is not enouigh by itself the simultaneity of the options is very important empirically in explaining behavior the results also show that there exists significant heterogeneity among mortgage borrowers ignoring this heterogeneity results in serious errors in estimating the prepayment behavior of homeowners

determinants of health care expenditure in africa a cross sectional study the paper presents some quantitative evidence on the relationship between certain socioeconomic and demographic factors and per capita health care expenditure in africa first gnp per capita percentage of births attended by health staff and foreign aid received per capita together explained 78 3 of the variance in health care expenditure second per capita gnp is the most significant factor explaining differences in health care expenditure contrary to what has been found in comparisons of health care expenditure in the organization for economic cooperation and development oecd countries we found that the income elasticity is close to unity furthermore aid was consistently significant and positive in the three models estimated third variables such as crude birth rate and the population under 15 years of age as percentage of total population were not significant

the inefficiency of refinancing why prepayment penalties are good for risky borrowers abstract this paper provides a theoretical analysis of the efficiency of prepayment penalties in a dynamic competitive lending model with risky borrowers and costly default when considering improvements in the borrower s creditworthiness as one of the reasons for refinancing mortgages we show that refinancing penalties can be welfare improving and that they can be particularly beneficial to riskier borrowers in the form of lower mortgage rates reduced defaults and increased availability of credit thus a high concentration of prepayment penalties among the riskiest borrowers can be an outcome of efficient equilibrium in a mortgage market we also provide empirical evidence that is consistent with the key predictions of our model

securitization and distressed loan renegotiation evidence from the subprime mortgage crisis abstract we examine whether securitization impacts renegotiation decisions of loan servicers focusing on their decision to foreclose a delinquent loan conditional on a loan becoming seriously delinquent we find a significantly lower foreclosure rate associated with bank held loans when compared to similar securitized loans across various specifications and origination vintages the foreclosure rate of delinquent bank held loans is 3 to 7 lower in absolute terms 13 to 32 in relative terms there is a substantial heterogeneity in these effects with large effects among borrowers with better credit quality and small effects among lower quality borrowers a quasi experiment that exploits a plausibly exogenous variation in securitization status of a delinquent loan confirms these results

stochastic house appreciation and optimal mortgage lending w e characterize the optimal mortgage contract in a continuous time setting with stochastic growth in house price and income costly foreclosure and a risky borrower who requires incentives to repay his debt we show that many features of subprime loans can be consistent with properties of the optimal contract and that when house prices decline mortgage modification can create value for borrowers and lenders our model provides a number of empirical predictions that relate the features of mortgage contracts originated in a housing boom and the extent of their modification in a slump to location and borrowers characteristics jel g20 g21 g33

optimal security design and dynamic capital structure in a continuous time agency model we derive the optimal dynamic contract in a continuous time principal agent setting and implement it with a capital structure credit line long term debt and equity over which the agent controls the payout policy while the project s volatility and liquidation cost have little impact on the firm s total debt capacity they increase the use of credit versus debt leverage is nonstationary and declines with past profitability the firm may hold a compensating cash balance while borrowing at a higher rate through the credit line surprisingly the usual conflicts between debt and equity asset substitution strategic default need not arise in this paper we consider a dynamic contracting environment in which a riskneutral agent or entrepreneur with limited resources manages an investment activity while the investment is profitable it is also risky and in the short run it can generate arbitrarily large operating losses the agent will need outside financial support to cover such losses and continue the project the difficulty is that while the probability distribution of the cash flows is publicly known the agent may distort these cash flows by taking a hidden action that leads to a private benefit specifically the agent may i conceal and divert cash flows for his own consumption and or ii stop providing costly effort which would reduce the mean of the cash flows therefore from the perspective of the principal or investors that fund the project there is the concern that a low cash flow realization may be a result of the agent s actions rather than the project s fundamentals to provide the agent with appropriate incentives investors control the agent s wage and may also withdraw their financial support for the project and force its early termination we seek to characterize an optimal contract in this framework and relate it to the firm s choice of capital structure we develop a method to solve for the optimal contract given the incentive constraints in a continuous time setting and study the properties of the credit line debt and equity that implement the contract as in the discrete time model of demarzo and fishman 2003 the continuous time setting offers several peter m demarzo is from stanford university and yuliy sannikov is from u c berkeley we

an analysis of mortgage contracting prepayment penalties and the due on sale clause the due on sale clause contained in most conventional home mortgage contracts is equivalent to a prepayment penalty equal to the difference between the face value and market value of the loan we analyze a bilateral game with asymmetric information and show that the bank demands the full penalty unless the market value of the loan is sufficiently low in that case the bank demands a prepayment penalty which is independent of the market value of the loan in order to induce additional prepayments we also demonstrate by a risk sharing argument that the due on sale clause is optimal in some settings even though it eliminates some beneficial home sales almost all conventional fixed rate home mortgage contracts written in the last decade contain a due on sale clause which gives the lender the contractual right to declare the total indebtedness due immediately if the mortgaged property is transferred as mortgage rates rise lending institutions suffer capital losses on fixed rate mortgage loans while borrowers earn capital gains equal to the difference between the face value and market value of their loans the due onsale clause gives the lending institution the right to demand the borrower s capital gain as a prepayment penalty in order to increase the probability of prepayment it can be optimal for the bank to accept a partial settlement in this paper we analyze the bank s strategy for setting the prepayment penalty it demands under the due on sale clause and examine the optimality of the clause the model we develop also applies to other types of prepayment penalties i e loan covenants which require payment of a premium over market value in order to extinguish

liar s loan effects of origination channel and information falsification on mortgage delinquency 1 this paper presents an analysis of mortgage delinquency between 2004 and 2008 using a loan level data set from a major national mortgage bank our analysis highlights two problems underlying the mortgage crisis a reliance on mortgage brokers who tend to originate lower quality loans and a prevalence of low documentation loans known in the industry as liar s loans that result in borrower information falsification while over three quarters of the difference in delinquency rates between bank and broker channels can be attributed to observable loan and borrower characteristics the delinquency difference between full and low documentation mortgages is due to unobservable heterogeneity about half of it potentially due to income falsification

repeated insurance contracts and learning this article considers a repeated insurance model with incomplete information in which the insurer and the consumer both learn over time about the unknown risk category of the consumer care choices by young consumers affect the informational value of the accident history under an optimal scheme of long term insurance contracts young consumers will always be subsidized by old consumers and consumers who are reassessed as low risk types are always subsidizers i e reverse experience ratings we compare this optimal scheme with the set of contracts that would emerge in a competitive market if only short term contracting were possible these sequentially competitive contracts can lead to over investment in care by both young and old consumers relative to the optimum in contrast to the underinvestment problem associated with moral hazard in insurance

housing market dynamics this paper presents a dynamic theory of housing market fluctuations it develops a life cycle model where households are heterogeneous with respect to income and preferences and mortgage lending is restricted by a down payment requirement the market interaction of young credit constrained households with older or richer unconstrained households generates the following results 1 current income of young credit constrained households affects housing prices independently of aggregate income 2 housing prices and the number of housing transactions are positively correlated 3 housing prices over react to income shocks 4 a relaxation of the down payment constraint triggers a boom bust cycle these results are consistent with patterns observed in the us and the uk

aggregate health care expenditures and national income is health care a luxury good it is well known that a strong relationship exists between national expenditures on health care and national income this has been used to suggest that health care is a luxury good and that factors such as the type of health care delivery system in a country are of little importance in determining expenditure levels this paper argues that these implications rely upon the application of microeconomic analysis to macroeconomic data and that this is not appropriate as well as raising questions about the inferences drawn from previous studies new empirical evidence is presented which casts some doubts on previous findings international comparisons are based on purchasing power parity rather than exchange rate conversions underlining the importance of prices as well as quantities in the relationship and leading to the conclusion that the aggregate data show health care to be if anything a necessity rather than a luxury good

health insurance and the demand for medical care evidence from a randomized experiment we estimate how cost sharing the portion of the bill the patient pays affects the demand for medical services the data come from a randomized experiment a catastrophic insurance plan reduces expenditures 31 percent relative to zero out of pocket price the price elasticity is approximately 0 2 we reject the hypothesis that less favorable coverage of outpatient services increases total expenditure for example by deterring preventive care or inducing hospitalization

optimal mortgage design this article studies optimal mortgage design in a continuous time setting with volatile and privately observable income costly foreclosure and a stochastic market interest rate we show that the features of the optimal mortgage are consistent with an option adjustable rate mortgage option arm under the optimal contract the borrower is given discretion of how much to repay until his balance reaches a certain limit the default rates and interest rate payment on the mortgage correlate positively with the market interest rate gains from using the optimal contract relative to simpler mortgages are the biggest for those who face more income variability buy pricey houses given their income level or make little or no down payment our model thus may help to explain a high concentration of option arms among riskier borrowers jel g20 g21 g33

public private mix of health expenditure a political economy and quantitative analysis this paper constructs a simple model to examine decisions on public and private health spending under majority voting in the model agents with heterogeneous incomes choose how much to consume and spend on health care and vote for public health expenditure the health status of an agent is determined by a ces composite of public and private health expenditure the existence and uniqueness of the voting equilibrium are established a quantitative exercise reveals the importance of the relative effectiveness of public and private health expenditure and their substitutability in determining the public private mix of health expenditure and in accounting for the observed differences across a sample of 22 advanced democratic countries

review of the literature on the determinants of healthcare expenditure this study reviews the literature on determinants of healthcare expenditure for the period 1998 to 2007 the methodology combines searches in the mesh database of pubmed with the search in the principal journals of health economics 20 primary studies were found that met the criteria for inclusion no single pattern of results is clearly identified among the 20 articles four consider income to be the principal determinant of healthcare expenditure two of them jointly with population ageing six highlight population ageing as against six others that emphasize the proximity to death the remaining six do not focus on a specific variable or focus on another variable e g technological progress or territorial decentralization 11 of the 20 articles calculate the income elasticity of demand only two of them obtaining a value greater than 1 thus cataloguing healthcare expenditure as a luxury good there is therefore no unanimity in the variables and econometric regressions of healthcare expenditure in

adverse selection in a model of real estate lending we provide a rationale for the presence of points in mortgage loan contracts our analysis builds on two key features first insurance markets are unavailable for labor income second the due on sale clause allows banks to offer loan contracts which partially insure against fluctuations in labor income if explicit prepayment penalties are prohibited by law points serve effectively as prepayment penalties we also examine environments where such penalties are not prohibited and show that points will be used if interest rates cannot depend on the size of the loan conventional home mortgage contracts contain a vast array of contingent clauses the most controversial of these is the due on sale clause that gives the lender the contractual right to declare the loan fully payable if all or part of the mortgaged property is sold dunn and spatt 1985 argue that the due on sale clause can provide insurance to the borrower they consider an environment where individuals face uninsurable risk in their income if incomes are high when borrowers move they will prefer a contract which imposes a prepayment penalty when they sell their property in return for a subsidy perhaps in the form of lower interest rates when they stay dunn and spatt characterize the optimal contract when the income of borrowers is unobservable to the lender however all borrowers are ex ante identical in this paper we examine a market where individuals differ in the riskiness of their potential gains from selling their property if this information is private to the borrower the kind of insurance arrangement described above must be modified to deal with the obvious selection problems that arise any lender must therefore ensure that any insurance contract offered to individuals with riskier income streams does not offer so much insurance at such a favorable price that individuals with less risky income also accept the same contract the classic analysis of this type of problem is by rothschild and stiglitz 1976 and our analysis follows theirs in order to focus attention on the nature of the adverse selection problem we assume two types of individuals both types have the same expected income stream for simplicity we assume that type i individuals do not

is social protection a necessity or a luxury good new multivariate cointegration panel data results the aim of this paper is to test the claim that social protection is a luxury good therefore gdp elasticity of selected social protection expenditure is estimated using a new econometric approach developed first by kao and chiang advances in econometrics 15 179 222 2000 time series properties of selected social expenditure in 18 oecd countries from 1981 to 1998 are examined using panel data cointegration tests and ols fmols and dols estimators results were found which differ from previous analyses reporting substantially higher income elasticities with the fmols selected social expenditure has income elasticities smaller than one but greater than one with the dols it is noteworthy that whether selected social expenditure is stationary or nonstationary may have critical implications for researchers and policy makers desiring to model and explain the impact of this expenditure on a country economic system

time consistent health insurance currently available health insurance contracts often fail to insure long term illnesses sick people can suffer large increases in premiums or denial of coverage i describe insurance contracts that solve this problem their key feature is a severance payment a person who is diagnosed with a long term illness and whose premiums are increased receives a lump sum equal to the increased present value of premiums this lump sum allows him or her to pay the higher premiums required by any insurer people are not tied to a particular insurer or a group and the improvement is free insurance companies can operate at zero economic profits and consumers can pay exactly the same premium they do with standard contracts

disentangling the heterogeneous income elasticity and dynamics of health expenditure in this article we empirically study the impact of per capita income on health care expenditure and its dynamics over time in a sample of 14 oecd countries for the period 1971 to 2009 a simple model built upon one developed by newhouse 1977 suggests that health care is a necessity in the short run but it cannot be rejected to be a luxury good in the long run our findings provide strong empirical evidence that a year s health expenditure is conditioned by the previous one interestingly our results reveal increasing income inelasticity over time along with huge heterogeneity across countries finally this article supports the hypothesis of conditional convergence in health care spending among countries in designing policies which facilitate the sustainability of national health systems we emphasize that ceteris paribus the greater the participation of public health the lower the growth rate of health spending high share of children and elderly over working age population opposite influences w

household production of health investment analysis and applications michael grossman s health investment model provides significant insights into allocations between both leisure and income and health and nonhealth goods our geometric extension i integrates labor leisure choice with the consumer s production of both health and nonhealth goods and ii distinguishes between medical expenditures and healthcare investment this provides a framework for examining the effects of changes in incomes and wages alternative insurance arrangements including managed care travel times waiting times and schooling observed differences between the income elasticities for health goods and health investment can be resolved through relative resource intensities in the production of health and nonhealth goods

health spending and public pension evidence from panel data abstractthis article empirically investigates the determinants of aggregate health expenditure in a panel of oecd countries from 1980 to 2005 we differ from most existing studies by testing some new determinants motivated by recent theoretical advances in the literature we find that a one percentage increase in public pension payments per elderly person leads to approximately a one third percentage increase in aggregate health spending and this effect is significant and robust across a variety of model specifications a back of the envelope calculation based on this estimate suggests that the expansion of the public pension programme on average accounts for approximately over one fifth of the rise in aggregate health expenditure as a share of gdp in the set of oecd countries during 1980 2005 in addition we find that the estimated effect of gdp per capita in our model ranges from 0 66 to 0 80 which is consistent with the results from some recent studies and thus further reinforces the finding in the

new panel results on cointegration of international health expenditure and gdp this article tests for existence of cointegration between health expenditure and gdp using data from 25 oecd countries for the period 19607ndash 1997 the empirical modelling is based on a heterogeneous bivariate vector error correction panel model that allows for trending data as well as intercepts and trends in the cointegrating relations univariate country by country and panel unit root tests generally fail to reject the null of a unit root in the health expenditure and gdp variables country by country results based on the johansen multivariate likelihood based inference indicate somewhat mixed results on country specific cointegration with a rank of one found for 12 countries and a rank of zero for the remaining 13 countries application of a new panel test for cointegration rank with higher power than the individual tests indicates that health expenditure and gdp are cointegrated around linear trends

the effects of regulating hidden add on costs we examine the welfare effects of price and disclosure regulation in a model where firms can shroud add on costs such as penalty fees for consumer financial products such regulation can increase or decrease welfare even when there are no direct costs there are however strong complementarities between price controls and disclosure mandates conditional on disclosure being mandated price controls always weakly increase welfare and conditional on prices being sufficiently constrained disclosure mandates always weakly increase welfare

conversion factor instability in international comparisons of health care expenditure parkin mcguire and yule 1987 hereafter pmy report that a regression of per capita health care expenditure on per capita income using different conversion factors exchange rates gdp ppps health ppps gave rise to different results in this note we apply updated data to the same empirical relationship in contrast to pmy we find no noticeable conversion factor instability in that relationship either with respect to the health care income elasticity or with the magnitude of multiple correlation coefficient

equity efficiency and financial risk of alternative arrangements for funding long term care systems in an ageing society partly a reflection of the increasing volume and hence political influence of the older population recent reforms of long term care ltc systems across developed countries have sought to expand the coverage of the services provided and have defined increasingly universal levels of state support for people with social care needs at the same time some of the factors leading to the expansion of the objectives and ambitions of the care system such as the ageing of the population pose significant challenges to its long term financial sustainability in this context the paper first reviews the main factors likely to contribute to the growth in ltc demand and expenditure and reflects on the policy priorities associated with state backed funding systems in the area using results from a bespoke dynamic micro simulation model it then illustrates the discussion through a quantitative analysis of the equity and efficiency implications of alternative funding models discussed in the context of the ongoing reforms of the ltc system in england

is health care a luxury the debate revisited with new evidence from emerging economies abstractthis paper studies the long run relationship between health care expenditure and income using a panel data set of emerging economies over the period 1995 2012 the results show that expenditure on health care and income are non stationary and cointegrated after controlling for cross sectional dependence and unobserved heterogeneity among different countries we find that the income elasticity of health care is less than 1 indicating that health care is a necessity and not a luxury government expenditure and out of pocket expenditure turn out to be important determinants of health care expenditure among non monetary factors results show that old age dependency and female education seem to have significant bearings on health care expenditures policy recommendations suggest that government should increase spending on health care in emerging economies since higher incomes may not automatically translate into higher health care spending by the people of these countries

evidence on the determinants of canadian provincial government health expenditures 1965 1991 abstract real per capita provincial government expenditures on health care over the period 1965 1991 are examined using pooled time series cross section regression analysis key determinants of real per capita provincial government expenditures on health care over the period 1965 1991 are real provincial per capita income the proportion of the provincial population over age 65 and real provincial per capita federal transfer revenues established program financing had a negative and significant impact on real per capita provincial government health expenditures in newfoundland and quebec an income elasticity of 0 77 implies that health care is not a luxury good

an econometric analysis of health care expenditure a cross section study of the oecd countries this paper is an empirical examination of the determinants of aggregate health care expenditure the paper presents a systematic analysis of relationships across 19 oecd countries showing the effects of aggregate income institutional and socio demographic factors on health care expenditure the results indicate that institutional factors of the health systems in addition to per capita gross domestic product gdp contribute significantly to the explanation of the health care expenditure variation between countries for example the way physicians in outpatient care are paid and the mixture of public private funding and inpatient outpatient care

on the determination of the us aggregate health care expenditure per capita real health care expenditure is examined against three major groups of explanatory variables economic demographic and health stock and it is found that the three groups of variables have an impact on real health care spending other subcategories such as real private and government health care pharmaceutical dental home nursing ambulatory personal medical consumption and in patient expenditures have also been examined and have been found to be affected by the explanatory variables for several subcomponents there is evidence of supplier inducement of the demographic group of variables the ageing population had an impact only on the per capita real overall and private health care outlay and pharmaceutical spending also cointegrating relationships were found and consistent estimators of the elasticities found

consumer default credit reporting and borrowing constraints why do negative credit events lead to long term borrowing constraints exploiting banking regulations in peru and utilizing currency movements we show that consumers who face a credit rating downgrade due to bad luck experience a three year reduction in financing consumers respond to the shock by paying down their most troubled loans but nonetheless end up more likely to exit the credit market for a set of borrowers who experience severe delinquency we find that the associated credit reporting downgrade itself accounts for 25 to 65 of their observed decline in borrowing at various horizons over the following several years

the role of commitment in dynamic contracts evidence from life insurance we use data on life insurance contracts to study the properties of long term contracts in a world where buyers cannot commit to a contract the data are especially suited to test a theory of dynamic contracting since they include information on the entire proele of future premiums all the patterns in the data et the theoretical predictions of a model with symmetric learning and one sided com

seasonal adjustment of the monetary aggregates summary of the federal reserve s committee report the committee of experts on seasonal adjustment techniques was formed by the federal reserve board to examine and make recommendations concerning the board s procedures for seasonally adjusting the money supply and related series this article summarizes the report of that committee

public financing of health expenditures insurance and health outcomes the effects of public financing of health expenditures insurance coverage and other factors on health outcomes are examined within health production models estimated using 1960 1992 data across 20 oecd countries mortality rates are found to depend on the mix of health care expenditures and the type of health insurance coverage increases in the publicly financed share of health expenditures are associated with increases in mortality rates increases in inpatient and ambulatory insurance coverage are associated with reduced mortality the effects of gdp health expenditures and age structure on mortality are similar to those in previous studies tobacco use alcohol use fat consumption female labour force participation and education levels are also significantly related to overall mortality rates increases in income inequality are associated with lower mortality rates suggesting that the negative relationship between inequality and health outcomes suggested by some previous studies does not remain w

subprime mortgage default abstract this paper constructs a reduced form credit risk model of mortgage default the data used is of privately securitized subprime arms adjustable rate mortgages originated between 1997 and 2008 and observed between 2000 and 2009 the period studied thus encompasses the beginning of the subprime crisis given the estimated model contractual properties of the loans are then used to infer the market price of default risk for the various quarters of origination it is empirically determined that a change in the inherent nature of borrowers led to a deterioration in their default performance a change which can be first detected in late 2004 on the other hand the evidence also indicates that the secondary mortgage market became aware of this change at about this same time the large rise in defaults in 2007 cannot therefore be attributed to any surprise other than the unexpectedly large fall in housing prices

the demand for health some new empirical evidence this paper presents some new estimates of the pure investment and pure consumption models of the demand for health in contrast to previous studies the paper presents parameter estimates of both reduced form and structural demand for health care equations the latter which are obtained by treating health capital as a latent variable in a recursive equation system provide a safer way of checking the consistency of the model s predictions with the data the present analysis of the pure consumption model differs from previous analyses in its recognition of the dependency of the shadow price of initial assets on the entire lifetime profiles of the model s exogenous variables the paper also explores the implications in terms of reliability of parameter estimates of the failure on the part of previous studies to recognize this

health care is an individual necessity and a national luxury applying multilevel decision models to the analysis of health care expenditures health care is neither a necessity or a luxury it is both since the income elasticity varies with the level of analysis with insurance individual income elasticities are typically near zero while national health expenditure elasticities are commonly greater than 1 0 the debate over whether health care is or is not a luxury good arises primarily from the failure to specify levels of analysis clearly so as to distinguish variation within groups from variation between groups apparently contradictory empirical results are shown to be consistent with a simple nested multilevel model of health care spending

equilibrium subprime lending this paper develops an equilibrium model of a subprime mortgage market our goal is to offer a benchmark with which the recent subprime boom and bust can be compared the model is tractable and delivers plausible orders of magnitude for borrowing capacities as well as default and trading intensities we offer simple explanations for several phenomena in the subprime market such as the prevalence of teaser rates and the clustering of defaults in our model both nondiversifiable and diversifiable income risks reduce debt capacities thus debt capacities need not be higher when a larger fraction of income risk is diversifiable

demand for health a generalised grossman model the demand for health and medical care is analysed within a generalised grossman type health investment model its underlying assumptions are shown to differ from those employed earlier in a manner which avoids some of the criticisms levelled at grossman s model the comparative static predictions of the generalised model are examined and it is demonstrated that most previous health investment models are derivable from it also the present model is applicable to a new wider range of problems thus increasing the scope of economic explanations of health behaviour

till mortgage do us part mortgage switching costs and household s bank switching abstract we investigate the role of mortgage switching costs in shaping the households decision to change their main bank to this end we use a unique panel dataset that enables us to infer household s bank switching in conjunction with a legal reform that exogenously slashed down the mortgage switching costs the empirical evidence which survives to a variety of robustness checks supports the hypothesis that the explicit switching costs in the retail banking market are a weighty factor in shaping households bank switching despite any potential informational lock in dissecting the results we show that the effects of the reform were not uniform across households the more educated households those with a longer or broader relationship with their previous bank and those residing in ex ante less competitive banking markets were at the forefront of the wave of bank switching