Table 1.

Distribution of Study Variables by Cognitive Impairment.^a

Variable	Category	Total		Noncognitively Impaired		Cognitively Impaired		χ2
		n	%	n	%	n	%
Smoking status	Never smokers	1713	67.1	1269	65.7	444	71.5	12.84b
	Former smokers	433	17.0	327	16.9	106	17.1
	Current smokers	407	15.9	336	17.4	71	11.4
Gender	Male	1150	45.0	903	46.7	247	39.8	9.21b
	Female	1403	55.0	1029	53.3	374	60.2
Age	<68	1219	47.7	1005	52.0	214	34.5	58.07c
	>68	1334	52.3	927	48.0	407	65.5
Household income, RM	<300	769	30.1	522	27.0	247	39.8	46.83c
	300-800	1144	44.8	876	45.3	268	43.2
	>800	640	25.1	534	27.6	106	17.1
CMC	No CMC	466	18.3	376	19.5	90	14.5	17.10c
	1-2 CMC	1320	51.7	1013	52.4	307	49.4
	3+ CMCs	767	30.0	543	28.1	224	36.1
Education	No Formal	1022	40.0	732	37.9	290	46.7	37.72c
	Primary	1155	45.2	871	45.1	284	45.7
	Secondary and tertiary	376	14.7	329	17.0	47	7.57

Abbreviations: CMC, chronic medical condition; RM: Ringgit Malaysia.

^a P ≤ .05.

^b P < .01.

^c P < .001.