I think the issue is that it becomes hard to estimate risk factors on an individual level with enough resolution to come up with such a table. Its easy to concl

I think the issue is that it becomes hard to estimate risk factors on an individual level with enough resolution to come up with such a table. Its easy to conclude that on average, walking a lot every day leads to better health outcomes, but probably hard to say whether you walking a lot would lead to better outcomes for you specifically. All this stuff has variance. On average, overweight people die sooner, but there are still overweight people who are long lived, and its hard to say whether you share those same latent variables that are actually influencing this result.