Chen Y (Department of Obstetrics and Gynaecology, Peking Union Medical College, Beijing, China). Wu P-C, Lang J-H, Ge W-J, Hartge P and Bnnton LA. Risk factors for epithelial ovarian cancer in Beijing, China. International Journal of Epidemiology 1992; 21: 23–29. A study in Beijing, China of 112 pathologically confirmed epithelial ovarian cancer cases and 224 age-matched community controls enabled evaluation of risk in relation to reproductive, medical, familial, and selected lifestyle factors. An inverse relationship was observed between the number of full-term pregnancies and ovarian cancer risk. Compared to nulliparous women, subjects with one, two, or three full-term pregnancies were at 50%, 70%, or 90% reduced risks, respectively (P for trend P for trend Pfor trend 3 months( application of talc-containing dusting powder to the lower abdomen and perineum (Relative risk 3.9, 95% confidence interval: 0.9–10.63). These findings suggest that Chinese women have risk factors similar to those of occidental women.