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Journal of Aging and Health
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Educational Differentials in Life Expectancy With Cognitive Impairment Among the Elderly in the United States

Agnès Lièvre, PhD

Institut National d'Etudes Démographiques, Paris

Dawn Alley, PhD

University of Pennsylvania, Philadelphia

Eileen M. Crimmins, PhD

University of Southern California, Los Angeles, crimmin{at}usc.edu

Objective: This article provides estimates of education differentials in life expectancy with and without cognitive impairment for the noninstitutionalized population aged 70 years and older in the United States. Method: Life expectancy with cognitive impairment was calculated using multistate models, allowing transitions between cognitively intact and cognitively impaired states and from each of these states to death and allowing transition rates to vary across age and education. Four waves of the Assets and Health Dynamics of the Oldest Old survey were used. Results: Those with low levels of education are more likely to become cognitively impaired and do so at an earlier age. After age 70, persons with low educational levels can expect to live 11.6 years, and persons with high education 14.1 years, without cognitive impairment. Length of life with cognitive impairment differs by education (1.6 years and 1.0 years at age 70, respectively) but differs little by age. Discussion: Although those with higher education have lower rates of both cognitive impairment and mortality, those who do become cognitively impaired appear to be in poorer health, leading to a reduced probability of improved cognition and increased probability of mortality relative to those with lower educational levels.

Key Words: health expectancy • cognitive impairment • education • elderly • AHEAD • longitudinal studies

Journal of Aging and Health, Vol. 20, No. 4, 456-477 (2008)
DOI: 10.1177/0898264308315857
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[Abstract] [PDF]