Neoplasia intraepitelial de cuello uterino en un área de salud de la Isla de la Juventud, Cuba: 1999-2008

background: the cervical intraepithelial neoplasm (cin) constitutes pre-cancer lesions of uterine cervix, showing an increment of their rates of incidence in everybody. cuba, in spite of having a screening program, it does more than 40 years have not been able to diminish the mortality for this cancer. objective: a case control study during the period of 1999-2008 was made to determinate the risk' factors associated with the probability of having a cin in patients of the university policlinic "dr. juan manuel paez inchausti" in the island of the youth (cuba). method: this study includes 632 patients, the half of them with this illness and the same number of healthy persons. the information about the patients was obtained by revision of his clinical history documents. result: the age average was from 36.08 ± 7.23 years. the more differentiates between both studies groups were between the patients of black skin. in the patients that began their sexual relationships before the 15 years the risk of suffering a cin was 3.8 times, also tripling the risk in the multipary patient and in those that used oral contraceptive for more than 10 years. conclusions: the risk factors of more relevance were the precocious beginning of the sexual relationships, the infections of sexual transmission and multiparity.