2000
Oral contraceptives and the incidence of multiple sclerosis
Hernán M, Hohol MJ, Olek MJ, Spiegelman D, Ascherio A. Oral contraceptives and the incidence of multiple sclerosis. Neurology 2000, 55: 848-853. PMID: 10994007, DOI: 10.1212/wnl.55.6.848.Peer-Reviewed Original ResearchConceptsRisk of MSHealth Study IIOral contraceptive useOral contraceptivesContraceptive useProtective effectHealth StudyNurses' Health Study IIAge-adjusted relative riskOral contraceptive historiesNurses' Health StudyProgression of MSDiagnosis of MSDuration of useCohort studyMS incidenceMS riskHormonal contraceptionMultiple sclerosisContraceptive historyRelative riskClinical dataProbable casesU.S. womenPast users
1997
Oral Contraceptives and Ovulatory Causes of Delayed Fertility
Chasan-Taber L, Willett W, Stampfer M, Spiegelman D, Rosner B, Hunter D, Colditz G, Manson J. Oral Contraceptives and Ovulatory Causes of Delayed Fertility. American Journal Of Epidemiology 1997, 146: 258-265. PMID: 9247010, DOI: 10.1093/oxfordjournals.aje.a009261.Peer-Reviewed Original ResearchConceptsOvulatory causeOral contraceptivesMultivariate relative riskOral contraceptive useReturn of fertilityHistory of infertilityCase-control studyPercent of casesDuration of useMethod of contraceptionOvulatory infertilityPrevious pregnancyEventual pregnancyHormonal disordersRelative riskContraceptive useYounger agePregnancyMarried nursesNursesWomenContraceptivesInfertilityDelayed fertilityFirst use