2002
Physical Activity, Body Mass Index, and Ovulatory Disorder Infertility
Rich-Edwards JW, Spiegelman D, Garland M, Hertzmark E, Hunter DJ, Colditz GA, Willett WC, Wand H, Manson JE. Physical Activity, Body Mass Index, and Ovulatory Disorder Infertility. Epidemiology 2002, 13: 184-190. PMID: 11880759, DOI: 10.1097/00001648-200203000-00013.Peer-Reviewed Original ResearchConceptsBody mass indexOvulatory disorder infertilityHealth Study IIOvulatory infertilityRelative riskMass indexVigorous activityNurses' Health Study IIVigorous-intensity exerciseLower relative riskAmerican womenAdiposity levelsIntensity exercisePhysical activitySedentary lifestyleBMI distributionInfertilityU.S. womenStudy IIWomenUnderweightRiskWeekly activitiesAssociationHours
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