Table 2 Prevalences of myopia (spherical equivalent at least −0.5 D in either eye) in Malaysia and Singapore.

	Malaysia (n = 1752)				Singapore (n = 1962)				Difference (Singapore−Malaysia)		p Value
	No at risk	Cases	Prevalence (%)	95% CI	No at risk	Cases	Prevalence (%)	95% CI	%	95% CI
Ethnicity
Malay	1245	114	9.2	7.4 to 10.9	348	77	22.1	17.9 to 26.9	13.0	11.2 to 14.7	<0.001
Chinese	285	88	30.9	23.4 to 38.3	1467	588	40.1	37.6 to 42.6	9.2	1.5 to 16.9	0.03
Indian	152	19	12.5	8.3 to 16.7	126	43	34.1	25.9 to 43.1	21.6	17.4 to 25.9	<0.001
Others	70	14	20.0	11.3 to 28.7	21	4	19.0	5.4 to 41.9	−1.0	−11.6 to 9.7	0.84
Age (years)
7	581	58	10.0	6.8 to 13.1	851	243	28.6	25.5 to 31.7	18.6	15.4 to 21.7	<0.001
8	601	84	14.0	10.3 to 17.6	630	219	34.8	31.0 to 38.6	20.8	17.2 to 24.4	<0.001
9	570	93	16.3	11.7 to 20.9	481	250	52.0	47.4 to 56.5	35.7	31.0 to 40.3	<0.001
Gender
Male	924	126	13.6	10.2 to 17.1	992	379	38.2	35.2 to 41.3	24.6	21.1 to 28.0	<0.001
Female	828	109	13.2	10.2 to 16.1	970	333	34.3	31.3 to 37.4	21.2	18.2 to 24.1	<0.001
Completed education level of father
No formal education or incomplete education	46	4	8.7	1.5 to 15.9	71	18	25.4	15.8 to 37.1	16.7	9.2 to 24.1	0.008
Primary education	393	63	16.0	11.5 to 20.6	464	149	32.1	27.9 to 36.6	16.1	11.5 to 20.7	<0.001
Secondary education	771	91	11.8	8.8 to 14.8	747	268	35.9	32.4 to 39.4	24.1	21.0 to 27.1	<0.001
Pretertiary education	202	20	9.9	4.2 to 15.6	309	117	37.9	32.4 to 43.5	28.0	22.2 to 33.7	<0.001
Tertiary and above	158	30	19.0	13.4 to 24.6	355	153	43.1	37.9 to 48.4	24.1	18.3 to 29.9	<0.001
All	1752	235	13.4	10.8 to 16.0	1962	712	36.3	34.2 to 38.5	22.9	20.3 to 25.4	<0.001