Background Homeless people are at high risk for death from manycauses, but age-adjusted death rates for well-defined homelesspopulations have not been determined.
Methods We identified 6308 homeless persons 15 to 74 years ofage who were served by one or both of two agencies for the homelessin Philadelphia between January 1, 1985, and December 31, 1988.Using a data base that contained all deaths in Philadelphiaand listings of all Philadelphia residents during the same period,we compared the mortality rate for this homeless populationwith the rate in the general population of Philadelphia.
Results The age-adjusted mortality rate among the homeless was3.5 times that of Philadelphia's general population (95 percentconfidence interval, 2.8 to 4.5). The age-adjusted number ofyears of potential life lost before the age of 75 years was3.6 times higher for the homeless people than for the generalpopulation (345 vs. 97 years lost per 1000 person-years of observation).Fifty-one of the 96 deaths of homeless persons (53 percent)occurred during the summer months. Mortality rates were higheramong the homeless than in the general population for nonwhites,whites, women, and men. Within the homeless cohort, white menand substance abusers had higher mortality rates than othersubgroups, but even homeless people not known to be substanceabusers had a threefold higher risk of death than members ofthe general population. Injuries, heart disease, liver disease,poisoning, and ill-defined conditions accounted for 73 percentof all the deaths among the homeless.
Conclusions Homeless adults in Philadelphia have an age-adjustedmortality rate nearly four times that of Philadelphia's generalpopulation. White men and substance abusers are at particularlyhigh risk. Matching cohorts of homeless people to death recordsis a useful way to monitor mortality rates over time, evaluateinterventions, and identify subgroups with an increased riskof death.
Source Information
From the Division of Field Epidemiology, Centers for Disease Control and Prevention, Atlanta (J.R.H.); the Bureau of Epidemiology, Pennsylvania Department of Health, Harrisburg (J.R.H.); the Philadelphia Office of Mental Health-Mental Retardation, Philadelphia (L.B., L.K, R.S.); the Philadelphia Office of Services for Homeless Adults, Philadelphia (I.M.); the Division of Disease Control, Philadelphia Department of Public Health, Philadelphia (A.K.M.); R.W. Johnson Pharmaceutical Research Institute, Spring House, Pa. (D.F.); and the Clinical Epidemiology Unit, Department of Medicine, University of Pennsylvania, Philadelphia (D.F.).
Address reprint requests to Dr. Hibbs at the Division of Infectious Diseases, Department of Internal Medicine, University of Minnesota Hospitals, Minneapolis, MN 55455.
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