1987
Persistent pulmonary hypertension: assessment of perinatal risk factors.
Reece E, Moya F, Yazigi R, Holford T, Duncan C, Ehrenkranz R. Persistent pulmonary hypertension: assessment of perinatal risk factors. Obstetrics And Gynecology 1987, 70: 696-700. PMID: 3658275.Peer-Reviewed Original ResearchConceptsPersistent pulmonary hypertensionPulmonary hypertensionFetal distressRisk factorsOdds ratioThird-trimester bleedingAntenatal risk factorsMothers of neonatesPerinatal risk factorsCesarean section rateLogistic regression analysisAntenatal eventsMaternal feverNonvertex presentationMaternal anemiaVaginal bleedingCesarean sectionControl patientsPulmonary diseaseSection rateRetrospective studyPrimary indicationUnknown etiologyUnivariate analysisStudy group
1984
ORAL CONTRACEPTIVE USE AND FIBROCYSTIC BREAST DISEASE AMONG PRE- AND POSTMENOPAUSAL WOMEN1
BERKOWITZ G, KELSEY J, LIVOLSI V, HOLFORD T, MERINO M, ORT S, O'CONNOR T, GOLDENBERG I, WHITE C. ORAL CONTRACEPTIVE USE AND FIBROCYSTIC BREAST DISEASE AMONG PRE- AND POSTMENOPAUSAL WOMEN1. American Journal Of Epidemiology 1984, 120: 87-96. PMID: 6741927, DOI: 10.1093/oxfordjournals.aje.a113878.Peer-Reviewed Original ResearchConceptsFibrocystic breast diseaseOral contraceptive useBreast diseaseOral contraceptivesContraceptive useHospital-based case-control studyOral contraceptive exposureGeneral surgical serviceCase-control studyLong-term useContraceptive exposurePostmenopausal women1Postmenopausal womenPremenopausal womenCystic diseaseStudy groupSurgical servicesDecreased frequencyPast usersDiseaseIncreased occurrenceWomenContraceptivesNegative associationAssociation
1983
Physical activity and the risk of spontaneous preterm delivery.
Berkowitz G, Kelsey J, Holford T, Berkowitz R. Physical activity and the risk of spontaneous preterm delivery. The Journal Of Reproductive Medicine 1983, 28: 581-8. PMID: 6631844.Peer-Reviewed Original ResearchConceptsPreterm deliveryPhysical activityLeisure-time physical activityYale-New Haven HospitalSingleton preterm infantsSingleton term infantsSpontaneous preterm deliveryPossible risk factorsModerate physical activityCase-control studyEpidemiologic case-control studyPhysical fitness exercisesPreterm infantsTerm infantsRisk factorsStudy groupPregnancyInfantsRiskFitness exercisesDeliveryMothersChild careQuestionnaire responsesHospital