1999
Reproducibility of plasma and urinary sex hormone levels in premenopausal women over a one-year period.
Michaud DS, Manson JE, Spiegelman D, Barbieri RL, Sepkovic DW, Bradlow HL, Hankinson SE. Reproducibility of plasma and urinary sex hormone levels in premenopausal women over a one-year period. Cancer Epidemiology Biomarkers & Prevention 1999, 8: 1059-64. PMID: 10613337.Peer-Reviewed Original ResearchConceptsPremenopausal womenIntraclass correlation coefficientLuteal phaseHormone levelsBlood samplesEndogenous sex steroid hormonesUrinary sex hormone levelsUrinary sex hormonesUrinary estrogen metabolitesSex hormone levelsSex steroid hormonesSets of bloodSingle blood sampleHigh intraclass correlation coefficientsLuteal phase samplesPlasma estrogenMenstrual cycleSex hormonesPlasma estradiolBreast cancerEstrogen metabolitesEstrone sulfateUrinary 2One-year periodSteroid hormones
1996
Reproducibility and Validity of a Self-Administered Physical Activity Questionnaire for Male Health Professionals
Chasan-Taber S, Rimm E, Stampfer M, Spiegelman D, Colditz G, Giovannucci E, Ascherio A, Willett W. Reproducibility and Validity of a Self-Administered Physical Activity Questionnaire for Male Health Professionals. Epidemiology 1996, 7: 81-86. PMID: 8664406, DOI: 10.1097/00001648-199601000-00014.Peer-Reviewed Original ResearchConceptsPhysical Activity QuestionnaireActivity QuestionnaireVigorous activityNonvigorous activitiesActivity scoreSelf-administered physical activity questionnaireMale health professionalsParticipants 2 yearsIntraclass correlation coefficientProspective studyHealth professionalsStudy participantsPulse rateActivity diaryStep testWeekly activitiesQuestionnaireDiary measurementsInactivityScoresParticipantsUseful measureActivityParticipants' abilityYears
1995
Reproducibility of plasma hormone levels in postmenopausal women over a 2-3-year period.
Hankinson SE, Manson JE, Spiegelman D, Willett WC, Longcope C, Speizer FE. Reproducibility of plasma hormone levels in postmenopausal women over a 2-3-year period. Cancer Epidemiology Biomarkers & Prevention 1995, 4: 649-54. PMID: 8547832.Peer-Reviewed Original ResearchConceptsSex hormone-binding globulinIntraclass correlation coefficientPlasma hormone levelsPostmenopausal womenBioavailable estradiolPlasma levelsFree estradiolHormone levelsHealthy postmenopausal womenHormone-binding globulinLow intraclass correlation coefficientsPostmenopausal hormonesPlasma estrogenPlasma hormonesEstrone sulfateAge 51Blood samplesEstradiolWomenHormoneAndrostenedioneProlactinAgeSample collectionMenopause