Be skeptical; be very skeptical

The Kaiser Daily Health Policy Report has a piece today about an effort to survey Wellpoint's many (35 million) about their physicians in order to provide consumer-based rankings, also to include comments. All together now: "The plural of anecdote is not data." Indeed, as one consumer group interviewed by Kaiser said, these rankings are likely to be skewed to the negative by patients who have had bad experiences. There are better ways to collect consumer-centered data - for example, AHRQ's CAHPS measures - than mass rants of the type Wellpoint proposes.

I don't have much use for Zagat's restaurant reviews, either, for the same reason.