Table 2.

Multivariable logistic regression analysis results for cognitive impairment

Variable	OR	S.E.	z	p-value	95% CI
					Low	High
Demographic factors
Sex
Male	–	–	–	–	–	–
Female	1.257	0.085	3.39	0.001	1.101	1.434
Age (years)
65 ~ 74	–	–	–	–	–	–
75 ~ 84	2.986	0.557	5.87	<  0.001	2.072	4.303
≥ 85	20.486	3.609	17.14	<  0.001	14.505	28.935
Marital status
Separated/divorced/widowed/never married	–	–	–	–	–	–
Currently married and living with a spouse	0.690	0.099	−2.59	0.009	0.521	0.913
Residential area
Urban/Town	–	–	–	–	–	–
Rural	0.996	0.059	−0.07	0.946	0.887	1.119
Socioeconomic status
Education level
No schooling	–	–	–	–	–	–
Primary school	0.678	0.051	−5.13	<  0.001	0.585	0.787
Middle school or more	1.223	0.142	1.74	0.082	0.975	1.535
Occupation
non-white-collar	–	–	–	–	–	–
white-collar	0.738	0.090	−2.49	0.013	0.580	0.937
Economic status (quintile)
1 (poorest)	–	–	–	–	–	–
2	0.861	0.078	−1.65	0.099	0.722	1.028
3	0.812	0.075	−2.27	0.023	0.678	0.972
4	0.771	0.073	−2.74	0.006	0.640	0.929
5 (richest)	0.577	0.057	−5.55	<  0.001	0.475	0.701
Social support
Emotional support
Nobody	–	–	–	–	–	–
Relatives/friends/neighbors and others	0.219	0.039	−8.48	<  0.001	0.154	0.311
Children	0.400	0.063	−5.78	<  0.001	0.293	0.546
Spouse	0.242	0.051	−6.71	<  0.001	0.160	0.366
Financial support
No	–	–	–	–	–	–
Yes	0.712	0.044	−5.45	<  0.001	0.630	0.804
Living arrangement
Alone	–	–	–	–	–	–
In an institution	3.374	0.569	7.22	<  0.001	2.425	4.695
With household member(s)	2.227	0.201	8.87	<  0.001	1.866	2.658
Social participation
Organized activities
No	–	–	–	–	–	–
Yes	1.065	0.089	0.76	0.449	0.905	1.253
Informal activities
No	–	–	–	–	–	–
Yes	0.872	0.050	−2.30	0.021	0.776	0.980