2022
Iron supplementation and paediatric HIV disease progression: a cohort study among children receiving routine HIV care in Dar es Salaam, Tanzania
Andersen CT, Duggan CP, Manji K, Seage GR, Spiegelman D, Perumal N, Ulenga N, Fawzi WW. Iron supplementation and paediatric HIV disease progression: a cohort study among children receiving routine HIV care in Dar es Salaam, Tanzania. International Journal Of Epidemiology 2022, 51: 1533-1543. PMID: 35167662, PMCID: PMC9557856, DOI: 10.1093/ije/dyac017.Peer-Reviewed Original ResearchMeSH KeywordsAnemiaChildCohort StudiesDietary SupplementsDisease ProgressionHIV InfectionsHumansIronProspective StudiesTanzaniaConceptsDisease stage progressionIron supplementationStage progressionCohort studyDisease progressionRoutine HIV careHIV disease progressionProspective cohort studyManagement of anemiaRisk of anemiaHigher hazard rateProportional hazards modelIron supplement useDar es SalaamHaematological outcomesAntiretroviral therapyHIV careClinic visitsSupportive careAntiretroviral treatmentClinical outcomesClinical visitsAnemia statusSupplement useVital statusMeasurement error affecting web- and paper-based dietary assessment instruments: Insights from the Multi-Cohort Eating and Activity Study for Understanding Reporting Error
Kirkpatrick S, Troiano R, Barrett B, Cunningham C, Subar A, Park Y, Bowles H, Freedman L, Kipnis V, Rimm E, Willett W, Potischman N, Spielgelman D, Baer D, Schoeller D, Dodd K. Measurement error affecting web- and paper-based dietary assessment instruments: Insights from the Multi-Cohort Eating and Activity Study for Understanding Reporting Error. American Journal Of Epidemiology 2022, 191: kwac026-. PMID: 35136928, PMCID: PMC9393065, DOI: 10.1093/aje/kwac026.Peer-Reviewed Original ResearchConceptsFood frequency questionnaireSingle food frequency questionnaireDietary assessment instrumentsFood recordsTrue usual intakeFrequency questionnaireUsual intakeAssessment instrumentsRecovery biomarkersEpidemiologic researchCorrelation coefficientValidation studyAverage attenuationCohortStudyIntakeBiomarkers
2021
Testing gene–environment interactions in the presence of confounders and mismeasured environmental exposures
Cheng C, Spiegelman D, Wang Z, Wang M. Testing gene–environment interactions in the presence of confounders and mismeasured environmental exposures. G3: Genes, Genomes, Genetics 2021, 11: jkab236. PMID: 34568916, PMCID: PMC8473983, DOI: 10.1093/g3journal/jkab236.Peer-Reviewed Original ResearchMeSH KeywordsCohort StudiesComputer SimulationEnvironmental ExposureGene-Environment InteractionHumansModels, GeneticConceptsStandard logistic regression approachGreater statistical powerStatistical powerBinary disease outcomeComputational efficiencyIllustrative exampleComputation timeExtensive simulation experimentsMost simulation scenariosMeasurement errorRegression approachConsideration adjustmentsSimulation experimentsExposure measurement errorReverse testLogistic regression approachSimulation scenariosLinear discriminant analysisApproachReverse approachPowerErrorDiscriminant analysisAnalysis of Survival Among Adults With Early-Onset Colorectal Cancer in the National Cancer Database
Cheng E, Blackburn HN, Ng K, Spiegelman D, Irwin ML, Ma X, Gross CP, Tabung FK, Giovannucci EL, Kunz PL, Llor X, Billingsley K, Meyerhardt JA, Ahuja N, Fuchs CS. Analysis of Survival Among Adults With Early-Onset Colorectal Cancer in the National Cancer Database. JAMA Network Open 2021, 4: e2112539. PMID: 34132794, PMCID: PMC8209612, DOI: 10.1001/jamanetworkopen.2021.12539.Peer-Reviewed Original ResearchConceptsEarly-onset colorectal cancerOnset colorectal cancerNational Cancer DatabaseColorectal cancerAge 51Overall survivalCancer DatabaseIncidence of CRCCox proportional hazards regressionPrimary colorectal cancerKaplan-Meier analysisProportional hazards regressionAge 50 yearsAge 25 yearsAnalysis of survivalCohort studySurvival benefitHazards regressionUnadjusted analysesCancer incidenceMAIN OUTCOMEAge 35Survival advantageLower riskStage I
2020
Impaired Hematological Status Increases the Risk of Mortality among HIV-Infected Adults Initiating Antiretroviral Therapy in Tanzania
Noor RA, Abioye AI, Hertzmark E, Darling AM, Aboud S, Mugusi FM, Sudfeld CR, Spiegelman D, Fawzi WW. Impaired Hematological Status Increases the Risk of Mortality among HIV-Infected Adults Initiating Antiretroviral Therapy in Tanzania. Journal Of Nutrition 2020, 150: 2375-2382. PMID: 32621487, PMCID: PMC7540061, DOI: 10.1093/jn/nxaa172.Peer-Reviewed Original ResearchConceptsRisk of mortalityPrevalence of anemiaHAART initiationHematological statusIron deficiencyAntiretroviral therapySerum ferritinSevere anemiaIncident clinical outcomesRelation of anemiaTrial of multivitaminsActive antiretroviral therapyHIV disease progressionCase-cohort studyIron deficiency anemiaProportional hazards modelElevated ironNonanemic participantsHIV patientsMultivariate adjustmentClinical outcomesMorbidity outcomesAnemia etiologyDeficiency anemiaIron supplementation
2012
PREDICTORS OF INCIDENT TUBERCULOSIS IN HIV-EXPOSED CHILDREN IN TANZANIA.
Finkelstein J, Manji K, Duggan C, Hertzmark E, Mehta S, Msamanga G, Spiegelman D, Fawzi W. PREDICTORS OF INCIDENT TUBERCULOSIS IN HIV-EXPOSED CHILDREN IN TANZANIA. East African Medical Journal 2012, 89: 183-92. PMID: 26856040, PMCID: PMC10864092.Peer-Reviewed Original ResearchConceptsRisk of tuberculosisChild mid-upper arm circumferenceMid-upper arm circumferenceT-cell countsArm circumferenceReduced riskCD4 T-cell countCD8 T-cell countsLow vitamin E levelsAppropriate infant feedingDuration of breastfeedingLongitudinal cohort studyVitamin E levelsIncident tuberculosisAntenatal clinicCohort studyLymphocyte countHIV infectionTuberculosis infectionChild tuberculosisHIV statusNutritional interventionImmunological statusInfant feedingE levelsCohort studies around the world: Methodologies, research questions and integration to address the emerging global epidemic of chronic diseases
Nair H, Shu XO, Volmink J, Romieu I, Spiegelman D. Cohort studies around the world: Methodologies, research questions and integration to address the emerging global epidemic of chronic diseases. Public Health 2012, 126: 202-205. PMID: 22325615, DOI: 10.1016/j.puhe.2011.12.013.Peer-Reviewed Original ResearchMeSH KeywordsChronic DiseaseCohort StudiesEpidemicsGlobal HealthHumansInternationalityResearch DesignConceptsChronic diseasesCohort studyChronic non-communicable diseasesNon-communicable chronic diseasesDual disease burdenCommunicable infectious diseasesNon-communicable diseasesMultiple cohort studiesResource-constrained settingsDisease burdenRisk factorsLifestyle changesGlobal epidemicInfectious diseasesDiseaseDisease distributionEpidemicBurdenPopulationSettingDramatic increase
2011
Fatty acids in the de novo lipogenesis pathway and risk of coronary heart disease: the Cardiovascular Health Study
Wu J, Lemaitre RN, Imamura F, King IB, Song X, Spiegelman D, Siscovick DS, Mozaffarian D. Fatty acids in the de novo lipogenesis pathway and risk of coronary heart disease: the Cardiovascular Health Study. American Journal Of Clinical Nutrition 2011, 94: 431-438. PMID: 21697077, PMCID: PMC3142722, DOI: 10.3945/ajcn.111.012054.Peer-Reviewed Original ResearchConceptsCoronary heart diseaseNonfatal myocardial infarctionSudden cardiac arrestFatal coronary heart diseaseTotal coronary heart diseaseIncident coronary heart diseaseDe novo lipogenesisHigh riskCHD eventsHeart diseaseMultivariable-adjusted Cox proportional hazardsCommunity-based prospective studySecondary analysisCardiovascular disease risk factorsCardiovascular Health StudyDisease risk factorsFatty acidsCox proportional hazardsDe novo lipogenesis pathwayCHD deathCHD outcomesProspective studyCardiac arrestMyocardial infarctionMedical records
2009
Evaluation of a novel food composition database that includes glutamine and other amino acids derived from gene sequencing data
Lenders CM, Liu S, Wilmore DW, Sampson L, Dougherty LW, Spiegelman D, Willett WC. Evaluation of a novel food composition database that includes glutamine and other amino acids derived from gene sequencing data. European Journal Of Clinical Nutrition 2009, 63: 1433-1439. PMID: 19756030, PMCID: PMC3249386, DOI: 10.1038/ejcn.2009.110.Peer-Reviewed Original ResearchConceptsFood frequency questionnaireGlutamine intakeItem food frequency questionnaireEnergy-adjusted intakesContent of glutamineGene sequencing methodsMajor food proteinsGlutamine contentFrequency questionnaireDietary intakeHealth StudyAbsolute intakeNHS participantsFood composition databasesIntakeVs 4.4Person coefficientPearson correlation coefficientTotal proteinAmino acidsComposition databaseCorrelation coefficientFood proteinsSequencing methodsGlutamine consumptionThe relationship between handedness and risk of multiple sclerosis
Gardener H, Munger K, Chitnis T, Spiegelman D, Ascherio A. The relationship between handedness and risk of multiple sclerosis. Multiple Sclerosis Journal 2009, 15: 587-592. PMID: 19389750, PMCID: PMC2771381, DOI: 10.1177/1352458509102622.Peer-Reviewed Original ResearchConceptsMultiple sclerosisHealth StudyHand preferenceOngoing prospective cohort studyUtero hormone exposureNurses' Health StudyProspective cohort studyMultiple sclerosis riskSex steroid hormonesLeft-handed womenLeft-handed individualsCohort studyAutoimmune disordersIncident casesUtero exposureUnknown etiologyPrenatal exposureSex hormonesImmune disordersStudy populationHormone exposureSclerosisFemale nursesSteroid hormonesRisk
2007
Calcium intake and hip fracture risk in men and women: a meta-analysis of prospective cohort studies and randomized controlled trials 1
Bischoff-Ferrari HA, Dawson-Hughes B, Baron JA, Burckhardt P, Li R, Spiegelman D, Specker B, Orav JE, Wong JB, Staehelin HB, O’Reilly E, Kiel DP, Willett WC. Calcium intake and hip fracture risk in men and women: a meta-analysis of prospective cohort studies and randomized controlled trials 1. American Journal Of Clinical Nutrition 2007, 86: 1780-1790. PMID: 18065599, DOI: 10.1093/ajcn/86.5.1780.Peer-Reviewed Original ResearchConceptsHip fracture riskProspective cohort studyTotal calcium intakeCalcium intakeFracture riskNonvertebral fracturesCohort studyClinical trialsHip fractureCalcium supplementationCa/dPooled RRRandomized trialsSmall trialsIntakeTrialsTrial 1PlaceboWomenRiskMenSupplementationNeutral effectFracturesRRPoint and interval estimates of partial population attributable risks in cohort studies: examples and software
Spiegelman D, Hertzmark E, Wand HC. Point and interval estimates of partial population attributable risks in cohort studies: examples and software. Cancer Causes & Control 2007, 18: 571-579. PMID: 17387622, DOI: 10.1007/s10552-006-0090-y.Peer-Reviewed Original ResearchConceptsCohort studyRisk factorsPartial population attributable riskNon-modifiable risk factorsSpecific exposuresPopulation attributable risk percentAttributable risk percentPopulation attributable riskBladder cancer incidenceGroups of exposureTarget populationProportion of diseaseAttributable riskDisease burdenModifiable determinantsCancer incidencePublic health researchDiseaseHealth researchExposurePopulationIncidenceProportion
2006
HIV-1 infection and fertility in Dar es Salaam, Tanzania.
Sedgh G, Larsen U, Spiegelman D, Msamanga G, Fawzi WW. HIV-1 infection and fertility in Dar es Salaam, Tanzania. African Journal Of Reproductive Health 2006, 10: 41-52. PMID: 17518130, DOI: 10.2307/30032470.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultCohort StudiesDisease ProgressionFemaleFertilityHIV InfectionsHIV-1HumansParturitionPregnancyTanzaniaConceptsHIV-1 infectionUninfected womenHIV infectionPregnancy lossMultivariate analysisHIV-1 infected womenPregnancy rate ratioRetrospective cohort studyPredictors of pregnancyHIV-positive womenNumber of pregnanciesRate of pregnancyDar es SalaamHigher pregnancy rateAdvanced diseaseCohort studyHIV seropositivityInfected womenBorderline significancePregnancy rateAdvanced stageInfectionPregnancyWomenRate ratioAlcohol intake and ovarian cancer risk: a pooled analysis of 10 cohort studies
Genkinger JM, Hunter DJ, Spiegelman D, Anderson KE, Buring JE, Freudenheim JL, Goldbohm RA, Harnack L, Hankinson SE, Larsson SC, Leitzmann M, McCullough ML, Marshall J, Miller AB, Rodriguez C, Rohan TE, Schatzkin A, Schouten LJ, Wolk A, Zhang SM, Smith-Warner SA. Alcohol intake and ovarian cancer risk: a pooled analysis of 10 cohort studies. British Journal Of Cancer 2006, 94: 757-762. PMID: 16495916, PMCID: PMC2361197, DOI: 10.1038/sj.bjc.6603020.Peer-Reviewed Original ResearchConceptsOvarian cancer riskCohort studyCancer riskPooled analysisAlcohol intakeRelative riskStudy-specific relative risksCox proportional hazards modelDepletion of folateModerate alcohol intakeOral contraceptive useProspective cohort studyHormone replacement therapyBody mass indexConfidence intervalsLevels of estrogenSerous ovarian cancerProportional hazards modelRandom-effects modelOvarian casesMenopausal statusMass indexReplacement therapyFolate intakeOvarian cancer
2005
Insulin Resistance in HIV-Infected Men and Women in the Nutrition for Healthy Living Cohort
Jones CY, Wilson IB, Greenberg AS, Shevitz A, Knox TA, Gorbach SL, Spiegelman D, Jacobson DL, Wanke C. Insulin Resistance in HIV-Infected Men and Women in the Nutrition for Healthy Living Cohort. JAIDS Journal Of Acquired Immune Deficiency Syndromes 2005, 40: 202-211. PMID: 16186739, DOI: 10.1097/01.qai.0000165910.89462.2f.Peer-Reviewed Original ResearchConceptsQuantitative insulin sensitivity check indexWorse insulin resistancePrevalence of IRInsulin resistanceNHANES IIIHigher high-density lipoproteinInsulin sensitivity check indexNutrition Examination Survey IIIHealthy Living cohortHealthy Living StudyHIV-Infected MenMore insulin resistanceActive antiretroviral therapyCD4 cell countCross-sectional study designInjection drug useLess insulin resistanceExamination Survey IIINHANES III participantsGreater waist circumferenceHigh-density lipoproteinLow-density lipoproteinProtease inhibitorsLiving cohortPI-HAARTIncreasing Risk of 5% or Greater Unintentional Weight Loss in a Cohort of HIV-Infected Patients, 1995 to 2003
Tang AM, Jacobson DL, Spiegelman D, Knox TA, Wanke C. Increasing Risk of 5% or Greater Unintentional Weight Loss in a Cohort of HIV-Infected Patients, 1995 to 2003. JAIDS Journal Of Acquired Immune Deficiency Syndromes 2005, 40: 70-76. PMID: 16123685, DOI: 10.1097/01.qai.0000159627.54149.2e.Peer-Reviewed Original ResearchConceptsCohort of HIVUnintentional weight lossWeight lossAntiretroviral therapyBody compositionLow CD4 cell countsHigher HIV viral loadHigher body mass indexCare of HIVHealthy Living cohortActive antiretroviral therapyCD4 cell countCombination antiretroviral therapyHIV viral loadBody mass indexRisk of deathPresence of diarrheaFederal poverty levelLiving cohortHIV infectionMass indexMost AIDSOpportunistic infectionsViral loadPatient populationFruits and Vegetables and Ovarian Cancer Risk in a Pooled Analysis of 12 Cohort Studies
Koushik A, Hunter DJ, Spiegelman D, Anderson KE, Arslan AA, Beeson WL, van den Brandt PA, Buring JE, Cerhan JR, Colditz GA, Fraser GE, Freudenheim JL, Genkinger JM, Goldbohm RA, Hankinson SE, Koenig KL, Larsson SC, Leitzmann M, McCullough ML, Miller AB, Patel A, Rohan TE, Schatzkin A, Smit E, Willett WC, Wolk A, Zhang SM, Smith-Warner SA. Fruits and Vegetables and Ovarian Cancer Risk in a Pooled Analysis of 12 Cohort Studies. Cancer Epidemiology Biomarkers & Prevention 2005, 14: 2160-2167. PMID: 16172226, DOI: 10.1158/1055-9965.epi-05-0218.Peer-Reviewed Original ResearchConceptsOvarian cancer riskVegetable intakeOvarian cancerCancer riskRelative riskPooled multivariate relative risksStudy-specific relative risksInvasive epithelial ovarian cancerCox proportional hazards modelTotal fruit intakeMultivariate relative riskFood frequency questionnaireTotal vegetable intakeEpithelial ovarian cancerProportional hazards modelDifferent histologic typesRandom-effects modelCancer-preventive actionsCohort studyHistologic typeProspective studyPooled analysisFruit intakeLowest quartileHazards modelHIV-1 Disease Progression and Fertility in Dar es Salaam, Tanzania
Sedgh G, Larsen U, Spiegelman D, Msamanga G, Fawzi WW. HIV-1 Disease Progression and Fertility in Dar es Salaam, Tanzania. JAIDS Journal Of Acquired Immune Deficiency Syndromes 2005, 39: 439-445. PMID: 16010167, DOI: 10.1097/01.qai.0000148529.58963.83.Peer-Reviewed Original ResearchConceptsHIV-1 disease progressionPregnancy rate ratioPregnancy incidenceDisease progressionRate ratioStage IHIV-1-infected womenHIV-1-positive womenCox proportional hazards modelClinical stage IIHIV-1 diseaseProspective cohort studyLive birth rateProportional hazards modelDar es SalaamLive birth incidenceCohort studyMenstrual dysfunctionIndependent predictorsRecent pregnancyHIV statusClinical progressionPregnancy rateOlder womenHazards modelSelenium levels in relation to morbidity and mortality among children born to HIV-infected mothers
Kupka R, Msamanga GI, Spiegelman D, Rifai N, Hunter DJ, Fawzi WW. Selenium levels in relation to morbidity and mortality among children born to HIV-infected mothers. European Journal Of Clinical Nutrition 2005, 59: 1250-1258. PMID: 16015252, DOI: 10.1038/sj.ejcn.1602236.Peer-Reviewed Original ResearchConceptsPlasma selenium levelsMorbidity informationSelenium levelsChild mortalityMaternal vitamin supplementsMonthly clinic visitsProspective cohort studyTertiary care hospitalMuhimbili National HospitalRisk of diarrheaChild health outcomesMonths of ageSelenium statusCause mortalityClinic visitsCohort studyRespiratory outcomesMedian ageStudy clinicNational HospitalVitamin supplementsHealth outcomesStudy childrenFogarty International CenterStudy participantsCorrelated errors in biased surrogates: study designs and methods for measurement error correction
Spiegelman D, Zhao B, Kim J. Correlated errors in biased surrogates: study designs and methods for measurement error correction. Statistics In Medicine 2005, 24: 1657-1682. PMID: 15736283, DOI: 10.1002/sim.2055.Peer-Reviewed Original Research