Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Mean physical capacity based on performance tests, self-report items and IRT score by age group.
Source. National Health and Aging Trends Study (NHATS; 2011).
Note. N = 7,609 persons 65 years and older. Excludes nursing home residents. IRT = item response theory.
