People in fair or poor health who have health insurance are less likely to drop or lose coverage if they have individual insurance than if they have small-group insurance, according to a study by Mark Pauly and Robert Lieberthal of Wharton. This finding, by the way, is stunning. It is the opposite of what all your friends and colleagues think.

It's like "Reefer Madness."  Full of fantasy.  Divorced from reality.  Michael Cannon draws our attention to a seven-year old study published by the Urban Institute.  University of Chicago economists Helen Levy and David Meltzer review all of the literature up to that point and conclude:

There is no evidence at this time that would allow us to say whether money aimed at improving health would be better spent on health insurance or on inner-city clinics, community-based screening programs for hypertension, or advertising campaigns to encourage good nutrition, to name just a few possibilities.

See also my Health Alert on this subject.