Fig. 1
Multivariable∗-adjusted ORs (95% CI) of cognitive impairment by napping duration; ∗Adjusted for age, education, BMI, smoking, physical activity, depressive symptoms, history of stroke, coronary heart disease, hypertension, diabetes, sleep medication use, and baseline 3MS score. N for each napping duration group of <30 min, 30-59 min, 60-119 min, and ≥120 min was 1061, 795, 642, and 253, respectively. Abbreviation: 3MS, Modified Mini-Mental State Examination.
