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A retrospective cohort study of cancer incidence among 6,310 female farm residents who were New York Farm Bureau members, or members' spouses or relatives, was conducted from 1980 through 1993. Similar to the previous findings for New York State male farmers, the female farm resident cohort experienced significantly lower cancer rates for all cancers combined, and for lung cancer, compared with rural nonfarm female residents. In addition, significantly low rates for colorectal cancer and ovarian cancer were found among the female cohort members. Nonsignificant excesses were found for thyroid and liver cancers. The findings suggest that female farm residents in this cohort might have experienced some of the same cancer-protective factors as male farmers.
Wang et al. (Fri,) studied this question.