Driving Life Expectancy of Persons Aged 70 Years and Older in the United States
Daniel J. Foley, MS,
Harley K. Heimovitz, PhD,
Jack M. Guralnik, MD, PhD and
Dwight B. Brock, PhD
Daniel J. Foley, Jack M. Guralnik, and Dwight B. Brock are with the Laboratory of Epidemiology, Demography, and Biometry, National Institute on Aging, Bethesda, Md. Harley K. Heimovitz is with Sytel Inc, Rockville, Md.
Correspondence: Requests for reprints should be sent to Daniel J. Foley, MS, Laboratory of Epidemiology, Demography, and Biometry, National Institute on Aging, 7201 Wisconsin Ave, Bethesda, MD 20892 (e-mail: foleyd{at}gw.nia.nih.gov).
Objectives. We estimated total life expectancy and driving lifeexpectancy of US drivers aged 70 years and older.
Methods. Life table methods were applied to 4699 elderly personswho were driving in 1993 and reassessed in a 1995 survey.
Results. Drivers aged 70 to 74 years had a driving life expectancyof approximately 11 years. A higher risk of mortality amongmen as a cause of driving cessation offset a higher risk ofdriving cessation not related to mortality among women thatresulted in similar driving life expectancies.
Conclusions. Nationwide, many elderly drivers quit driving eachyear and must seek alternative sources of transportation. Becauseof differences in life expectancy, women require more yearsof support for transportation, on average, than men after age70.
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