In November 1994, Daling published a
case-control study in the
Journal of the National Cancer Institute which found that induced, but not spontaneous,
abortion was associated with a 50% increased risk of
breast cancer. The study also found that the highest increase in risk was among women who had an abortion in the last month of the first trimester. However, Daling cautioned against drawing a firm conclusion at the time, and told the
Seattle Post-Intelligencer that "I'm concerned that this will be used to alarm people." Two years later she co-authored another study on the same topic that found a smaller increase in risk (relative risk 1.2) and no evidence of a higher increase in risk among any subgroups. ==References==