Table 1

Sociodemographic characteristics of participants*

Variable		Response	n	Weighted %
Sociodemographic	Sex	Male	1902	45.1
	Sex	Female	2514	54.9
	Age	<60 years	2569	60.9
	Age	≥60 years	1847	39.1
	Education	Primary	601	11.8
		Secondary	2302	50.1
		Higher	1513	38.1
	Insurance type	National health insurance	4311	97.5
	Insurance type	Medical aid	105	2.5
	Job status	Employed	2454	55.2
	Job status	Unemployed	1962	44.8
	Income	First quintile	827	20.9
		Second quintile	860	18.4
		Third quintile	811	19.4
		Fourth quintile	914	19.6
		Fifth quintile	1004	21.7
Health-related variables	Hypertension	No	3279	76.2
	Hypertension	Yes	1137	23.8
	Diabetes mellitus	No	3876	88.4
	Diabetes mellitus	Yes	540	11.6
	Mental disorders	No	4403	99.8
	Mental disorders	Yes	13	0.2
	Respiratory disease	No	4326	98.2
	Respiratory disease	Yes	90	1.8
	Heart disease	No	4287	97.4
	Heart disease	Yes	129	2.6
	Cerebrovascular disease	No	4344	98.5
	Cerebrovascular disease	Yes	72	1.5
	Neurological disorders	No	4321	98.2
	Neurological disorders	Yes	95	1.8
	Cancer	No	4360	98.9
	Cancer	Yes	56	1.1
	Thyroid gland disorders	No	4313	98.0
	Thyroid gland disorders	Yes	103	2.0
	Liver disease	No	4382	99.2
	Liver disease	Yes	34	0.8
	Chronic kidney disease	No	4402	99.6
	Chronic kidney disease	Yes	14	0.4
	Miscellaneous disease	No	4096	93.1
	Miscellaneous disease	Yes	320	6.9
	Self-perceived health	Very good	497	10.5
		Good	2268	53.0
		Neutral	1122	25.4
		Bad	454	9.8
		Very bad	75	1.3

*Frequencies are raw values and percentages are weighted.