title: [Efficacy of contraception. Reflections on its statisitcal evaluation and its real value].
mesh_terms: D000032:Abortion, Therapeutic; D002681:China; D003267:Contraception; D003270:Contraceptive Agents; D003276:Contraceptives, Oral; D004997:Ethinyl Estradiol / Q000008:administration & dosage; D005260:Female; D005602:France; D006801:Humans; D007433:Intrauterine Device Expulsion; D007434:Intrauterine Devices; D009042:Motivation; D009640:Norethindrone / Q000008:administration & dosage; D011247:Pregnancy; D011275:Pregnancy, Unwanted; D013245:Sterilization, Reproductive; D014481:United States
chemical_list: D003270:Contraceptive Agents; D003276:Contraceptives, Oral; D004997:Ethinyl Estradiol; D009640:Norethindrone
vernacular_title: Efficacité de la contraception. Réflexions sur son évaluation statistique et sa valeur réelle