1998
The relation of physical activity to risk for symptomatic gallstone disease in men.
Leitzmann MF, Giovannucci EL, Rimm EB, Stampfer MJ, Spiegelman D, Wing AL, Willett WC. The relation of physical activity to risk for symptomatic gallstone disease in men. Annals Of Internal Medicine 1998, 128: 417-25. PMID: 9499324, DOI: 10.7326/0003-4819-128-6-199803150-00001.Peer-Reviewed Original ResearchConceptsSymptomatic gallstone diseaseGallstone diseasePhysical activityYears of ageSymptomatic gallstonesBody weightU.S. male health professionalsMale health professionalsProspective cohort studyUse of medicationsMen 65 yearsStrong inverse associationBiliary eventsMen 40Cohort studySmoking habitsExtreme quintilesAlcohol intakeRecent symptomsInverse associationMultiple confoundersMedical conditionsSedentary behaviorHigh riskHealth professionals
1993
Vitamin A supplementation and dietary vitamin A in relation to the risk of xerophthalmia
Fawzi W, Herrera, Willett W, Amin A, Nestel P, Lipsitz S, Spiegelman D, Mohamed K. Vitamin A supplementation and dietary vitamin A in relation to the risk of xerophthalmia. American Journal Of Clinical Nutrition 1993, 58: 385-391. PMID: 8237850, DOI: 10.1093/ajcn/58.3.385.Peer-Reviewed Original ResearchConceptsRisk of xerophthalmiaDietary vitaminVitamin AIncidence of xerophthalmiaTotal dietary vitaminMultivariate relative riskRisk of vitaminVitamin A supplementsDietary vitamin ASigns of vitaminEye symptomsExtreme quintilesNutritional blindnessRelative riskA supplementsReduced riskXerophthalmiaVitaminRiskPreschool childrenFurther dataChildrenIntakeSupplementationSame endpoints
1992
Correction of Logistic Regression Relative Risk Estimates and Confidence Intervals for Random Within-Person Measurement Error
Rosner B, Spiegelman D, Willett WC. Correction of Logistic Regression Relative Risk Estimates and Confidence Intervals for Random Within-Person Measurement Error. American Journal Of Epidemiology 1992, 136: 1400-1413. PMID: 1488967, DOI: 10.1093/oxfordjournals.aje.a116453.Peer-Reviewed Original ResearchConceptsRelative risk estimatesRisk factorsLogistic regressionRisk estimatesCoronary risk factorsCoronary heart diseaseGold standardConfidence intervalsFramingham Heart StudyExamination 4Extreme quintilesHeart diseaseOdds ratioHeart StudyExamination 2Exposure assessmentSubstudyCovariatesMenMain studyReproducibility dataRegressionFactorsQuintileIncidence