Glycosylated hemoglobin and functional decline in community-dwelling nursing home-eligible elderly adults with diabetes mellitus.

Objectives: To determine whether glycosylated hemoglobin (HbA1c) levels predict functional decline in older adults.

Design: Longitudinal cohort study.

Participants: Community-dwelling, nursing home (NH)-eligible individuals with diabetes mellitus enrolled at On Lok between October 2002 and December 2008 (367 participants, 1,579 HbA1c measurements).