Social and medical correlates of survival among octogenarians: United Automobile Worker retirees and Spanish-American War veteran's.
D000368:Aged; D000553:Ambulatory Care; D005500:Follow-Up Studies; D006262:Health; D006306:Health Surveys; D006760:Hospitalization; D006801:Humans; D007750:Labor Unions; D008136:Longevity; D008297:Male; D006278:Medicare; D009017:Morbidity; D009026:Mortality; D012107:Research Design; D012179:Retirement; D012649:Self Concept; D012917:Social Adjustment; D012959:Socioeconomic Factors; D013997:Time Factors; D014481:United States; D014493:United States Department of Veterans Affairs