Still anecdotal:
In one test they put me in the category of Caucasian male, 60 plus, the drugs being taken, etc., and the statistics showed that, over the years, my cohort had the worst mortality.... we slowly gained access to the statistics... the key was my cohort was 60 years old and plus. Plus what? Plus 10 years, plus 30 years.... My cohort included people who were 80, 90, 100 years old. And you know what happened to them? They died. And every time somebody took a notion to die, what with being 85 and all, it wrecked the averages for me and the 60 year olds.