# ACTIVE LIFE EXPECTANCY IN THE OLDER POPULATION

> **NIH NIH R01** · UNIVERSITY OF SOUTHERN CALIFORNIA · 1993 · $149,683

## Abstract

The general aim of this research is to use the multistate approach to
active life expectancy to provide a fuller portrayal of the interaction
of health and mortality among the older members of the American
population. The impetus for this study comes from a desire to clarify how
differences in mortality and morbidity conditions affect the health
status of a population and the expected life cycle experiences of
individuals. Given the current stratification of morbidity and mortality
rates across sociodemographic groups, our analysis attends to major
cleavages in active life expectancy among the oldest members of the
American population. Our strategy to examine these issues rests on the
following specific aims:

1) the estimation of levels of active and inactive life expectancy during
the latter half of the 1980's. In this phase of the study, we question
the utility of previously employed definitions of active and inactive
life and propose a division of life expectancy into states based on
ability to provide a given level of self-care. These definitions divide
life when functioning is less than complete into a set of policy-relevant
health states.

2) the use of multivariate hazard models to probe the social, demographic
and medical correlates of changes in health status in old age; and

3) to derive active life tables from the multivariate hazard models to
achieve a substantive interpretation of the implications of the combined
set of hazard-model estimates for older persons' health expectancy and
for population health. This will result In life tables for more detailed
subgroups of the population than has previously been possible. Further,
this approach will allow the identification of how sociodemographic
characteristics shape the potentially complex processes by which older
individuals experience both improvement and declines in health.

The Longitudinal Study of Aging is the major data set to be employed in
this research.

## Key facts

- **NIH application ID:** 3123212
- **Project number:** 1R01AG011235-01A1
- **Recipient organization:** UNIVERSITY OF SOUTHERN CALIFORNIA
- **SAM.gov UEI:** G88KLJR3KYT5
- **Principal Investigator:** EILEEN M CRIMMINS
- **Activity code:** R01 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 1993
- **Award amount:** $149,683
- **Award type:** 1
- **Project period:** 1993-08-01 → 1995-07-31

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/3123212

## Citation

> US National Institutes of Health, RePORTER application 3123212, ACTIVE LIFE EXPECTANCY IN THE OLDER POPULATION (1R01AG011235-01A1). Retrieved via MORVS 2026-10-25 from https://api.morvs.ai/grant/nih/3123212. Licensed CC0.

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