Figure 1.

Analysis of covariance for the association of adjusted means of physical performance measures, grip strength and functional status with increasing Drug Burden Index. Means adjusted for age, education, comorbidities, body mass index (BMI), history of falls, cognitive impairment and depression. Drug Burden Index grouped into three intervals (0, 0–1, ≥1). Error bars show 95% confidence interval (CI). IADL, Instrumental activities of daily living; IADL score – higher score indicates worse function, balance test, 0-worst performance, 3-best performance; grip strength – higher number indicates better function; chair stands, 6 m walking speed and 20-cm narrow walking speed, lower number indicates better performance