[Epidemiologic factors in cervical intraepithelial neoplasia III in our experience].

The study of 52 cases of cervical intraepithelial neoplasia seen from 1980 to 1984 shows that early sexual activity increases the relative risk 3.35 times if the intercourse takes place before 20 years of age, and 2.5 times if before 15 years. The use of IUD increases the risk 2.77 times. Parity, civil status and gynecologic infections do not increase the risk. Cervical intraepithelial neoplasia is more frequently diagnosed in women with a higher socio-economic status, due to a better health care.