Utilizing a panel data set of 50 US states, this note investigates nonstationarity and cointegration of health care expenditures and gross state products (GSP). Both the individual state-based method and the recent panel data method are applied. Allowing for structural breaks in the test, we...

Previous studies demonstrated that the willingness to pay (WTP) for reducing the risk of a targeted disease increases with the severity of a comorbidity condition. They evaluated the WTPs at positions where otherwise identical individuals who have unequal comorbidity conditions all have the same...