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Invasive cervical cancer and combined oral contraceptives. WHO collaborative study of neoplasia and steroid contraceptives. 1985

A multicentre, hospital based case-control study is being conducted under the auspices of the World Health Organisation to determine whether steroid contraceptives alter the risk of gynaecological, breast, and hepatic neoplasms. Preliminary results, largely from developing countries, on the relation between combined oral contraceptives and invasive cervical carcinoma showed a relative risk of 1.19 (95% confidence interval 0.99-1.44) in women who had ever used oral contraceptives. The risk increased with duration of use, giving a relative risk of 1.53 after five years. This finding supports a causal interpretation, but it could also be due to incomplete control for confounding sexual variables and other sources of bias.

UI MeSH Term Description Entries
D007391 International Cooperation The interaction of persons or groups of persons representing various nations in the pursuit of a common goal or interest. Foreign Aid,Treaties,Aid, Foreign,Cooperation, International,Treaty
D009361 Neoplasm Invasiveness Ability of neoplasms to infiltrate and actively destroy surrounding tissue. Invasiveness, Neoplasm,Neoplasm Invasion,Invasion, Neoplasm
D002583 Uterine Cervical Neoplasms Tumors or cancer of the UTERINE CERVIX. Cancer of Cervix,Cancer of the Cervix,Cancer of the Uterine Cervix,Cervical Cancer,Cervical Neoplasms,Cervix Cancer,Cervix Neoplasms,Neoplasms, Cervical,Neoplasms, Cervix,Uterine Cervical Cancer,Cancer, Cervical,Cancer, Cervix,Cancer, Uterine Cervical,Cervical Cancer, Uterine,Cervical Cancers,Cervical Neoplasm,Cervical Neoplasm, Uterine,Cervix Neoplasm,Neoplasm, Cervix,Neoplasm, Uterine Cervical,Uterine Cervical Cancers,Uterine Cervical Neoplasm
D003276 Contraceptives, Oral Compounds, usually hormonal, taken orally in order to block ovulation and prevent the occurrence of pregnancy. The hormones are generally estrogen or progesterone or both. Low-Dose Oral Contraceptive,Oral Contraceptive,Oral Contraceptives,Oral Contraceptives, Low-Dose,Oral Contraceptives, Phasic,Contraceptive, Low-Dose Oral,Contraceptive, Oral,Contraceptives, Low-Dose Oral,Contraceptives, Phasic Oral,Low Dose Oral Contraceptive,Low-Dose Oral Contraceptives,Oral Contraceptive, Low-Dose,Oral Contraceptives, Low Dose,Phasic Oral Contraceptives
D003277 Contraceptives, Oral, Combined Fixed drug combinations administered orally for contraceptive purposes. Combined Oral Contraceptive,Contraceptive Agents, Female, Combined,Oral Contraceptives, Combined,Combined Oral Contraceptives,Contraceptive, Combined Oral,Contraceptives, Combined Oral,Oral Contraceptive, Combined
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012306 Risk The probability that an event will occur. It encompasses a variety of measures of the probability of a generally unfavorable outcome. Relative Risk,Relative Risks,Risk, Relative,Risks,Risks, Relative
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor
D014626 Vaginal Smears Collection of pooled secretions of the posterior vaginal fornix for cytologic examination. Cervical Smears,Cervical Smear,Smear, Cervical,Smear, Vaginal,Smears, Cervical,Smears, Vaginal,Vaginal Smear

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