We found a continuing trend towards conducting DCEs across a broader range of countries .
However , the trend towards including fewer attributes was reversed , whilst the trend towards interview-based DCEs reversed because of increased computer administration .
The trend towards using more flexible econometric models , including mixed logit and latent class , has also continued .
Reporting of monetary values has fallen compared with earlier periods , but the proportion of studies estimating trade-offs between health outcomes and experience factors , or valuing outcomes in terms of utility scores , has increased , although use of odds ratios and probabilities has declined .
The reassuring trend towards the use of more flexible and appropriate DCE design s and econometric methods has been reinforced by the increased use of qualitative methods to inform DCE processes and results .
However , qualitative research methods are being used less often to inform attribute selection , which may make DCEs more susceptible to omitted variable bias if the decision framework is not known prior to the research project .
Background Discrete choice experiments ( DCEs ) are increasingly used in health economics to address a wide range of health policy-related concerns .
Objective Broadly adopting the methodology of an earlier systematic review of health-related DCEs , which covered the period 2001–2008 , we report whether earlier trends continued during 2009–2012 .
Willingness to pay for improvements in chronic long-acting insulin therapy in individuals with type 1 or type 2 diabetes mellitus.
BACKGROUND Long-acting insulin treatments with varying clinical benefits are currently available for patients with type 1 diabetes mellitus ( T1DM ) and type 2 diabetes mellitus ( T2DM ) . The current evidence base demonstrates the efficacy of treatments , but it is critical also to underst and patient preferences regarding treatments and how they are determined . OBJECTIVE This study aim ed to measure the willingness to pay ( WTP ) of individuals with diabetes in the United Kingdom for different attributes of long-acting insulin therapy . METHODS A survey based on discrete choice experiment methodology was developed to elicit the preferences and values of adults with T1DM or insulin-dependent T2DM regarding different aspects of their therapy . Participants were presented with a series of 27 paired choices and asked which they preferred . WTP values were calculated for relevant attribute levels . RESULTS A total of 252 participants completed the question naire ( 52 % response rate ) ; 143 had T1DM and 109 had insulin-treated T2DM . The highest WTP values in participants with T1DM were avoiding 2-kg or 4-kg weight gain ( £ 29 and £ 58 , respectively ) , avoiding major difficulties with the injection device ( £ 49 ) , increasing the number of days per week when blood glucose levels are in the target range from 2 to 6 ( £ 40 ) , reducing the number of daily injections from 3 to 1 ( £ 39 ) , and avoiding nighttime hypoglycemia ( £ 33 ) . In participants with T2DM , similar factors had the highest WTP . CONCLUSIONS This is the first study to assess WTP  for long-acting insulin therapy and could have implication s for future guidelines on diabetes management , however some limitations , notably in sample selection , could affect generalizability of the results . In both T1DM and T2DM , the highest WTP values were for avoidance of weight gain , and reduction in the number of injections and hypoglycemia
We found a continuing trend towards conducting DCEs across a broader range of countries .
However , the trend towards including fewer attributes was reversed , whilst the trend towards interview-based DCEs reversed because of increased computer administration .
The trend towards using more flexible econometric models , including mixed logit and latent class , has also continued .
Reporting of monetary values has fallen compared with earlier periods , but the proportion of studies estimating trade-offs between health outcomes and experience factors , or valuing outcomes in terms of utility scores , has increased , although use of odds ratios and probabilities has declined .
The reassuring trend towards the use of more flexible and appropriate DCE design s and econometric methods has been reinforced by the increased use of qualitative methods to inform DCE processes and results .
However , qualitative research methods are being used less often to inform attribute selection , which may make DCEs more susceptible to omitted variable bias if the decision framework is not known prior to the research project .
Background Discrete choice experiments ( DCEs ) are increasingly used in health economics to address a wide range of health policy-related concerns .
Objective Broadly adopting the methodology of an earlier systematic review of health-related DCEs , which covered the period 2001–2008 , we report whether earlier trends continued during 2009–2012 .