To analyze the effect of health on work, many studies use a simple self-assessed health measure based upon a question such as do you have an impairment or health problem limiting the kind or amount of work you can do? A possible drawback of such a measure is the possibility that different groups...

We find disease incidence and prevalence are both higher among Americans in age groups 55-64 and 70-80 indicating that Americans suffer from higher past cumulative disease risk and experience higher immediate risk of new disease onset compared to the English. In contrast, age specific mortality...