RESULTS
Final Study Population
We received responses from 20,836 (57 percent) of
the 36,547 women to whom we mailed the initial survey;
17,725 (85 percent) of those responding were ineligible
because they had a low risk score or another reason
for exclusion, and 504 women (2 percent) declined
to participate. Of the remaining 2607 eligible women
(13 percent), 1009 had been randomly assigned to the
screening group and 1598 to the usual-care group