aging and inequality in income and health in our earlier work we used data from the national health interview survey nhis to examine life cycle patterns in health status and in the joint distribution of health status and income deaton and paxson 1998 in this paper we summarize and extend those results and provide new evidence from the panel study of income dynamics psid both surveys contain a measure of household income and collect information on an ordinal measures of self reported health status srhs that ranges from 1 excellent to 5 poor section i concerns problems related to the measurement of inequality in health section ii presents evidence from the two surveys on health and income inequality this abstract was borrowed from another version of this item

the causal effect of income on health evidence from german reunification we investigate whether there was a causal effect of income changes on the health satisfaction of east and west germans in the years following reunification our data source is the german socio economic panel gsoep between 1984 and 2002 and we fit a recently proposed fixed effects ordinal estimator to our health measures and use a causal decomposition technique to account for panel attrition we find evidence of a significant positive effect of income changes on health satisfaction but the quantitative size of this effect is small this is the case with respect to current income and a measure of permanent income

panel attrition from the panel study of income dynamics household income marital status and mortality this analysis is concerned with the determinants of panel attrition from the panel study of income dynamics and with its consequences for estimation of dynamic behavioral models which exploit the panel or longitudinal information household income dynamics marriage formation and dissolution and adult mortality risk we develop and estimate joint models of attrition and one or more of these substantive processes and allow for correlation across the equations through random effects although we find evidence of significant selectivity in attrition behavior the biases that are introduced by ignoring selective attrition are very mild

estimating the effect of income on health and mortality using lottery prizes as an exogenous source of variation in income a vast literature has established a strong positive relation between income and health status and a negative relation with mortality this paper studies the effects of income on health and mortality using only the part of income variation due to a truly exogenous factor monetary lottery prizes of individuals the findings are that higher income causally generates good health and that this effect is of a similar magnitude as when traditional estimation techniques are used a 10 percent income increase improves health by about 4 5 percent of a standard deviation

exploring the health wealth nexus the causal links between health and economic resources have long concerned social scientists we use four waves of data from the panel study of income dynamics psid to analyze the impact of wealth upon an individual s health status the difficulty in approaching this task that has bedeviled previous studies is that wealth may be endogenous a priori it is just as likely that changes in health affect wealth as vice versa we argue that inheritance is a suitable instrument for the change in wealth and implement a straightforward instrumental variables strategy to deal with this problem our results suggest that the causal relationship running from wealth to health may not be as strong as first appears in the data wealth exerts a positive and statistically significant effect on health status but it is very small in magnitude instrumental variables estimation leaves the point estimate approximately the same but renders it insignificantly different from zero and even when the point estimate is increased by twice its standard error s e the quantitative effect is small we conclude that the wealth health connection is not driven by short run changes in wealth

simple solutions to the initial conditions problem in dynamic nonlinear panel data models with unobserved heterogeneity i study a simple widely applicable approach to handling the initial conditions problem in dynamic nonlinear unobserved effects models rather than attempting to obtain the joint distribution of all outcomes of the endogenous variables i propose finding the distribution conditional on the initial value and the observed history of strictly exogenous explanatory variables the approach is flexible and results in simple estimation strategies for at least three leading dynamic nonlinear models probit tobit and poisson regression i treat the general problem of estimating average partial effects and show that simple estimators exist for important special cases copyright 2005 john wiley sons ltd

the dynamics of health in the british household panel survey this paper considers the dynamics of a categorical indicator of self assessed health using eight waves 1991 1998 of the british household panel survey bhps our analysis has three focal points the relative contributions of state dependence and heterogeneity in explaining the dynamics of health the existence and consequences of health related sample attrition and the investigation of the effects of measures of socioeconomic status with a particular focus on educational attainment and income to investigate these issues we use dynamic panel ordered probit models there is clear evidence of health related attrition in the data but this does not distort the estimates of state dependence and of the socioeconomic gradient in health the models show strong positive state dependence and heterogeneity accounts for around 30 of the unexplained variation in health copyright 2004 john wiley sons ltd

the relationship between education and adult mortality in the united states prior research has uncovered a large and positive correlation between education and health this paper examines whether education has a causal impact on health i follow synthetic cohorts using successive u s censuses to estimate the impact of educational attainment on mortality rates i use compulsory education laws from 1915 to 1939 as instruments for education the results suggest that education has a causal impact on mortality and that this effect is perhaps larger than has been previously estimated in the literature copyright 2005 wiley blackwell

socio economic inequality in ill health amongst the elderly should one use current or permanent income in belgium income related inequality in ill health among the 65 is present but reduces significantly as soon as one restricts the analysis to the 65 the main goal of this paper is to check whether these findings based on current income are robust to the income concept used the analysis is repeated using estimates of permanent income measured inequality among the 65 remains very limited suggesting that the observed findings are not heavily dependent upon the income concept finally i suggest an explanation for the observed difference in inequality between the 65 and the 65 i argue that this difference is likely to be correlated with differences across income groups of 1 sample attrition and 2 mortality

dynamic security design convergence to continuous time and asset pricing implications an entrepreneur with limited liability needs to finance an infinite horizon investment project an agency problem arises because she can divert operating cash flows before reporting them to the financiers we first study the optimal contract in discrete time this contract can be implemented by cash reserves debt and equity the latter is split between the financiers and the entrepreneur and pays dividends when retained earnings reach a threshold to provide appropriate incentives to the entrepreneur the firm is downsized when it runs short of cash we then study the continuous time limit of the model we prove the convergence of the discrete time value functions and optimal contracts our analysis yields rich implications for the dynamics of security prices stock prices follow a diusion reflected at the dividend barrier and absorbed at zero their volatility as well as the leverage ratio of the firm increase after bad performance stock prices and book tomarket ratios are in a non monotonic relationship a more severe agency problem entails lower price earning ratios and firm liquidity and higher default risk

disability retirement and unemployment substitute pathways for labour force exit an empirical test for the case of germany this paper studies the determinants of disability retirement and unemployment of older workers two labour market phenomena which the german public discussion combines under the label of early retirement the implicit assumption that these two mechanisms are exchangeable pathways into permanent retirement is tested using panel data the transition rates from employment into disability retirement and into unemploymentare estimated and compared statistical tests reject the hypothesis that disability retirement and unemployment are substitutes

the health implications of social security failure evidence from the russian pension crisis abstract we explore whether health is vulnerable to income shocks focusing on a recent crisis in russia during which many pensioners were not paid for an extended period of time using panel data spanning the crisis we find that among affected pensioners poverty rates doubled and the intake of calories and protein and the use of health services and medications declined significantly these pensioners were also 5 percent more likely to die in the two years following the crisis however households responded in ways that mitigated the impact of the crisis replacing one fifth of lost pension income through increased labor supply and asset sales

a theory of financing constraints and firm dynamics there is widespread evidence supporting the conjecture that borrowing constraints have important implications for firm growth and survival in this paper we model a multiperiod borrowing lending relationship with asymmetric information we show that borrowing constraints emerge as a feature of the optimal long term lending contract and that such constraints relax as the value of the borrower s claim to future cash flows increases we also show that the optimal contract has interesting implications for firm dynamics in agreement with the empirical evidence as age and size increase mean and variance of growth decrease and firm survival increases

pension incentives and the pattern of early retirement this mix of state and private pension provision in the united kingdom provides a rare degree of variation in pension incentives for retirement using a sample of individuals from the uk retirement survey the paper models the probability of retirement in terms of the incentives underlying the individual s pension plan as well as other socio economic factors it follows an option value approach and allows a separate role for pension wealth for spouse s economic characteristics and for demographic characteristics it distinguishes between serps and private schemes and models eligibility to disability the results point to significant retirement incentive effects from the pension system

the panel study of income dynamics after fourteen years an evaluation this article considers the representativeness of the panel study of income dynamics psid over its 14 year history from 1968 to 1981 given the dynamics of entry and exit from the panel by 1981 40 of the original members had left the sample and were replaced by new entrants who joined either existing households or new households being formed by members of the original sample we consider the distribution of demographic characteristics and earnings equations over time and we compare the psid with the current population survey cps by either approach we find little evidence that the psid has become unrepresentative

ill health and retirement in britain a panel data based analysis we examine the effect of ill health on retirement decisions in britain using the british household panel survey 1991 1998 as self reported health status is likely to be endogenous to the retirement decision we instrument self reported health by a constructed health stock measure using a set of health indicator variables and personal characteristics as suggested by bound et al bound j schoenbaum m stinebrickner t m waidmann m 1999 the dynamic effects of health on the labor force transitions of older workers labour economics 6 179 202 using a range of econometric techniques we show that adverse shocks to individual health stocks predict individual retirement behaviour among workers aged from 50 until state pension age we compare responses of economic activity to constructed health measures with that arising using direct indicators of functional limitations and specific health problems we also examine the dynamics of health shocks and whether adverse and positive health shocks have symmetric effects on transitions in and out of economic activity

persistence in health limitations a european comparative analysis this paper investigates the persistence in health limitations for individuals within the member states of the european union we use the full eight waves of data available in the european community household panel echp to explore the relative contributions of state dependence unobserved heterogeneity and socioeconomic characteristics in particular income education and activity status and how these vary across countries we focus on binary measures of health limitations constructed from the answers to the question are you hampered in your daily activities by any physical or mental health problem illness or disability dynamic non linear panel data models are specified and estimated using both pooled and random effects probit and logit models together with complementary log log models the random effects probit specifications are preferred results reveal high state dependence of health limitations which remains after controlling for measures of socioeconomic status there is heterogeneity in the socioeconomic gradient across countries

healthy bodies and thick wallets the dual relation between health and economic status there is abundant evidence of a quantitatively large association between many measures of economic status including income and wealth and a variety of health outcomes such as mortality or morbidity however considerable and often heated debate remains especially across disciplines about the direction of causation and about why the association arises although medical scientists are often convinced that the dominant if not exclusive pathway is that variation in socioeconomic status produces health disparities they are increasingly debating among themselves about why low economic status might lead to poor health at least for modern industrial countries 1 the old standby arguments the less well to do have access to less or lower quality medical care or a stronger pattern of deleterious personal behaviors have been rejected as insufficient instead a series of intriguing competing theories have arisen that emphasize long term impacts of early childhood or even inter uterine environmental factors the cumulative effects of prolonged exposures to individual stressful events or reactions to macro societal factors such as rising levels of income inequality a common link is that each theory attempts to document the physiological processes through which low economic status leads to poorer health while these scientific questions are extremely important this research has taken place with little input from economists economists are now making contributions about the alternative pathway the impact poor health may have on economic resources poor health may restrict a family s capacity to earn income or to accumulate assets by limiting work or by raising medical expenses at a minimum this work should provide a caution against exaggerating the magnitude of causation from economic status to health outcomes but the potential contribution runs deeper as people age the evolving variation in individual health outcomes may offer additional statistical information to estimate parameters of household savings and consumption behavior that so far have proven to be somewhat elusive thus incorporating health uncertainty and risk into economic models should eventually enrich our understanding of basic tenets of household behavior the first section of this paper documents the size of the association between health and one prominent economic status measure household wealth section two deals with how health influences economic status by sketching out reasons why health may alter household savings and eventually wealth and then providing estimates of the empirical magnitude of these effects section three shifts attention to the alternative pathway the links between economic status and health and summarizes 2major controversies and evidence surrounding these issues

the transition from good to poor health an econometric study of the older population this is a study of the influence of socioeconomic factors on the state of health of older canadians three years of panel data from the survey of labour and income dynamics are used to model the transition probabilities between good and poor health care is taken to avoid the problem of endogeneity of income in modelling its effects and to adjust reported income to free it from its strong association with age at the time of the survey of particular note are the significant effects found for income in spite of universal public health care coverage significant effects are found also for age education and other variables

longitudinal analysis of income related health inequality this paper considers the characterisation and measurement of income related health inequality using longitudinal data the paper elucidates the nature of the jones and lopez nicolas 2004 index of health related income mobility and explains the negative values of the index that have been reported in all the empirical applications to date the paper further presents an alternative approach to the analysis of longitudinal data that brings out complementary aspects of the evolution of income related health inequalities over time in particular we propose a new index of income related health mobility that measures whether the pattern of health changes is biased in favour of those with initially high or low incomes we illustrate our work by investigating mobility in the general health questionnaire measure of psychological well being over the first nine waves of the british household panel survey from 1991 to 1999

on repeated moral hazard with discounting in this paper we analyze optimal contracts in an infinitely repeated agency model in which both the principal and agent discount the future we show that there is a stationary representation of the optimal contract when the agent s conditional discounted expected utility is used as a state variable this representation reduces the multi period problem to a static variational problem which can be analyzed using standard variational techniques this reduction is used to obtain several properties of the contract

the role of model uncertainty and learning in the u s postwar policy response to oil prices abstract this paper studies optimal monetary policy in a framework that explicitly accounts for policymakers uncertainty about the channels of transmission of oil prices into the economy more specifically using postwar us data i examine the evolution of the policy recommendations originating from an optimal linear regulator problem that encompasses model uncertainty and learning as proposed by cogley and sargent 2005b in this environment i find that one of the underlying models dominates the robust interest rate response to oil prices and i show that this result is due to the instability of this specification in the sample period under analysis