1984
Acute Prolapsed Lumbar Intervertebral Disc An Epidemiologic Study with Special Reference to Driving Automobiles and Cigarette Smoking
KELSEY J, GITHENS P, O'CONNER T, WEIL U, CALOGERO J, HOLFORD T, WHITE A, WALTER S, OSTFELD A, SOUTHWICK W. Acute Prolapsed Lumbar Intervertebral Disc An Epidemiologic Study with Special Reference to Driving Automobiles and Cigarette Smoking. Spine 1984, 9: 608-613. PMID: 6495031, DOI: 10.1097/00007632-198409000-00012.Peer-Reviewed Original ResearchConceptsCigarette smokingAverage riskNumber of pregnanciesPossible etiologic significanceCase-control studyEpidemiologic case-control studyRatio of menLumbar intervertebral discsNonoccupational factorsFemale ratioRisk factorsEpidemiologic studiesHigh riskSurgical casesEtiologic significanceNumber of childrenLumbar discIntervertebral discHigh heelsSmokingRiskNumber of hoursPast yearPregnancySurgeryAn epidemiologic study of lifting and twisting on the job and risk for acute prolapsed lumbar intervertebral disc
Kelsey J, Githens P, White A, Holford T, Walter S, O'Connor T, Ostfeld A, Weil U, Southwick W, Calogero J. An epidemiologic study of lifting and twisting on the job and risk for acute prolapsed lumbar intervertebral disc. Journal Of Orthopaedic Research® 1984, 2: 61-66. PMID: 6491800, DOI: 10.1002/jor.1100020110.Peer-Reviewed Original ResearchConceptsLumbar intervertebral discsCase-control studyIntervertebral discEpidemiologic case-control studyEpidemiologic studiesHigh riskFrequent liftingLumbar discRisk
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