Table 3. Association of demographic variables with cognitive impairment (n=240).

*significant P-value, ref: reference variable

Variable		Frequency n	Cognitive impairment n (%)	Prevalence ratio (95% Confidence Interval)	P-value
Residence	Urban	120	37 (30.8)	1.06 (0.72- 1.56)	0.778
	Rural	120	35 (29.2)	1.00 (ref)
Age	≥ 60 years	163	59 (36.2)	2.14 (1.25- 3.67)	0.002*
	<60 years	77	13 (16.9)	1.00 (ref)
Gender	Female	150	63 (42.0)	4.20 (2.20- 8.03)	<0.001*
	Male	90	9 (10.0)	1.00 (ref)
Marital status	Widow	80	43 (53.8)	2.97 (2.01- 4.4)	<0.001*
	Married	160	29 (18.1)	1.00 (ref)
Education	Illiterate	93	48 (51.6)	3.16 (2.09- 4.79)	<0.001*
	Literate	147	24 (16.3)	1.00 (ref)
Employment	Unemployed	201	67 (33.3)	2.60 (1.12- 6.03)	0.011*
	Employed	39	5 (12.8)	1.00 (ref)
Family type	Joint	114	35 (30.7)	1.05 (0.71- 1.54)	0.821
	Nuclear	126	37 (29.4)	1.00 (ref)