Association between cancer screening behavior and family history among Japanese women.

Objective: To examine lifestyle habits and cancer screening behavior in relation to a family history of cancer among Japanese women.

Methods: A cross-sectional study was conducted based on baseline data from the Japan Nurses' Health Study collected from June 2001 to March 2007. Participants were 47,347 female nurses aged 30-59 years residing in 47 prefectures in Japan. We compared lifestyle habits and the utilization of cancer screenings (cervical and breast) between women with and without a family history of the relevant cancer.

Results: Although there were no differences in lifestyle habits with the exception of smoking status, women with a family history of uterine cancer were more likely to have undergone cervical cancer screenings (p<0.01). Women with a family history of breast cancer were also more likely to have undergone breast cancer screenings regardless of their age (p<0.01), but lifestyle behaviors did not differ. Among women with a family history of uterine cancer, those with a sister history were more likely to have undergone not only cervical (OR, 1.89; 95% CIs, 1.39-2.58), but also breast cancer screenings (OR, 1.54; 95% CIs 1.13-2.09).

Conclusion: Having a family history of cancer was associated with cancer screening behavior, but not health promotive behaviors.