Table 1.

Demographic overview of the study participants

(Number of subjects and percentages)

	Age (years)
	6		7–9		10–12		Total
	n	%	n	%	n	%	n	%
Sex
Male	44	7·8	133	23·7	92	16·4	269	48
Female	37	6·6	164	29·2	91	16·2	292	52
Total	81	14·4	297	52·9	183	32·6	561	100
Ethnicity
Chinese	56	10·0	238	42·4	140	25·0	434	77
Malay	11	2·0	25	4·5	22	3·9	58	10
Indian	12	2·1	25	4·5	19	3·4	56	10
Others	2	0·4	9	1·6	2	0·4	13	2
Region
North	14	2·5	53	9·4	37	6·6	104	19
East	17	3·0	54	9·6	27	4·8	98	17
North-East	22	3·9	106	18·9	57	10·2	185	33
Central	13	2·3	38	6·8	19	3·4	70	12
West	15	2·7	46	8·2	43	7·7	104	19
Type of housing
Public	58	10·3	245	43·7	18	3·2	321	57
Condominium	13	2·3	34	6·1	156	27·8	203	36
Landed property	3	0·5	6	1·1	2	0·4	11	2
Semi-detached	0	0·0	4	0·7	3	0·5	7	1
Terrace	6	1·1	8	1·4	2	0·4	16	3
Conservation flat	1	0·2	0	0·0	2	0·4	3	1