Population based study of social and productive activities as predictors of survival among elderly Americans
Glass T, de Leon C, Marottoli R, Berkman L. Population based study of social and productive activities as predictors of survival among elderly Americans. The BMJ 1999, 319: 478. PMID: 10454399, PMCID: PMC28199, DOI: 10.1136/bmj.319.7208.478.Peer-Reviewed Original ResearchConceptsProspective cohort studyPredictors of survivalBody mass indexHistory of cancerFrail elderly peopleProportional hazards modelRandom population sampleRace/ethnicityCohort studySurvival benefitCardiopulmonary fitnessExercise programFunctional disabilityMass indexMyocardial infarctionYear survivalMAIN OUTCOMEPhysical activityHazards modelParticipants' homesElderly AmericansPsychosocial pathwaysPhysical exertionOlder peopleAlternative interventions