Biopsychosocial characteristics of community-dwelling older adults with limited ability to walk one-quarter of a mile.

Objectives: To establish nationally representative estimates of the prevalence of self-reported difficulty and inability of older adults to walk one-quarter of a mile and to identify the characteristics independently associated with difficulty or inability to walk one-quarter of a mile.

Design: Cross-sectional analysis of data from the 2003 Cost and Use Medicare Current Beneficiary Survey.

Setting: Community.