Table 4.

Association of BMI and waist circumference with cognitive impairment by sex, according to demographic characteristics and risk factor groups in the multivariate analysis.

Factors	Model 1 OR (95% CI)	Model 2 OR (95% CI)	Model 3 OR (95% CI)
BMI
Male	0.961 (0.900, 1.025)	0.963 (0.902, 1.028)	0.938 (0.875, 1.005)
Female	1.058 (1.005, 1.115)*	1.057 (1.003, 1.113)*	1.059 (1.003, 1.119)*
Waist circumference
Male	0.973 (0.951, 0.997)*	0.975 (0.952, 0.998)*	0.960 (0.935, 0.984)*
Female	1.015 (0.995, 1.036)	1.015 (0.995, 1.037)	1.015 (0.994, 1.037)

Model 1 analysis adjusted by age and education.

Model 2 analysis adjusted by age, education, smoking, drinking and physical exercise.

Model 3 analysis adjusted age, education, smoking, drinking, physical exercise, BP group, diabetes and hyperlipidemia.

^*Represents P < 0.05.