A member asked:

What were the problems with the womens health initiative study?

A doctor has provided 1 answer
Dr. Marsha Davis answered

Specializes in Internal Medicine

Bias: It was biased toward older women, smokers and women with heart disease. It was stopped too early to tell if there was any effect on breast cancer because of the long detection time . Most of the women may have had it already and just not known it.

Answered 7/4/2012

5.8k views

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