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Age-specific prevalence and years of healthy life in a system with three health states.

Publication ,  Journal Article
Diehr, P; Yanez, D; Derleth, A; Newman, AB
Published in: Stat Med
April 30, 2008

Consider a 3-state system with one absorbing state, such as Healthy, Sick, and Dead. Over time, the prevalence of the Healthy state will approach an 'equilibrium' value that is independent of the initial conditions. We derived this equilibrium prevalence (Prev:Equil) as a function of the local transition probabilities. We then used Prev:Equil to estimate the expected number of years spent in the healthy state over time. This estimate is similar to the one calculated by multi-state life table methods, and has the advantage of having an associated standard error. In longitudinal data for older adults, the standard error was accurate when a valid survival table was known from other sources, or when the available data set was sufficient to estimate survival accurately. Performance was better with fewer waves of data. If validated in other situations, these estimates of prevalence and years of healthy life (YHL) and their standard errors may be useful when the goal is to compare YHL for different populations.

Duke Scholars

Published In

Stat Med

DOI

ISSN

0277-6715

Publication Date

April 30, 2008

Volume

27

Issue

9

Start / End Page

1371 / 1386

Location

England

Related Subject Headings

  • Statistics & Probability
  • Quality-Adjusted Life Years
  • Probability
  • Models, Statistical
  • Middle Aged
  • Longitudinal Studies
  • Life Tables
  • Humans
  • Health Status
  • Biometry
 

Citation

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Diehr, P., Yanez, D., Derleth, A., & Newman, A. B. (2008). Age-specific prevalence and years of healthy life in a system with three health states. Stat Med, 27(9), 1371–1386. https://doi.org/10.1002/sim.3056
Diehr, Paula, David Yanez, Ann Derleth, and Anne B. Newman. “Age-specific prevalence and years of healthy life in a system with three health states.Stat Med 27, no. 9 (April 30, 2008): 1371–86. https://doi.org/10.1002/sim.3056.
Diehr P, Yanez D, Derleth A, Newman AB. Age-specific prevalence and years of healthy life in a system with three health states. Stat Med. 2008 Apr 30;27(9):1371–86.
Diehr, Paula, et al. “Age-specific prevalence and years of healthy life in a system with three health states.Stat Med, vol. 27, no. 9, Apr. 2008, pp. 1371–86. Pubmed, doi:10.1002/sim.3056.
Diehr P, Yanez D, Derleth A, Newman AB. Age-specific prevalence and years of healthy life in a system with three health states. Stat Med. 2008 Apr 30;27(9):1371–1386.
Journal cover image

Published In

Stat Med

DOI

ISSN

0277-6715

Publication Date

April 30, 2008

Volume

27

Issue

9

Start / End Page

1371 / 1386

Location

England

Related Subject Headings

  • Statistics & Probability
  • Quality-Adjusted Life Years
  • Probability
  • Models, Statistical
  • Middle Aged
  • Longitudinal Studies
  • Life Tables
  • Humans
  • Health Status
  • Biometry