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