Table 2.

Association between intergenerational relationships and cognitive impairment with cut-off value 24 for MMSE scores

	Model 1		Model 2		Model 3
	Crude HR (95% CI)	P value	HR (95% CI)	P value	HR (95% CI)	P value
Main financial support		< 0.001		< 0.001		< 0.001
No	1 Reference		1 Reference		1 Reference
Yes	3.00 (2.77, 3.24)		2.55 (2.35, 2.77)		2.50 (2.31, 2.72)
Living or being visited		0.278		0.807		0.793
No	1 Reference		1 Reference		1 Reference
Yes	1.06 (0.96, 1.17)		1.01 (0.91, 1.13)		1.01 (0.91, 1.13)
Housework or childcare		0.001		< 0.001		< 0.001
No	1 Reference		1 Reference		1 Reference
Yes	0.90 (0.84, 0.96)		0.86 (0.81, 0.92)		0.89 (0.83, 0.95)

Abbreviations: HR Hazard ratio, CI Confidence interval

Model 2 were adjusted for age, gender, residence, marital status and education

Model 3 were further adjusted for smoking, drinking status, exercise, ADL disability, BMI, comorbidity and baseline Chinese MMSE scores