Table 6. The relationship between demographic and socio-economic characteristics and vision loss (bilateral VA<6/18 with available correction).

		VA<6/18		Unadjusted	Multivariate adjusted
	Total	n	%	OR (95% CI)	OR (95% CI)a
Age (years)
50–59	1240	71	5.7%	Reference	Reference
60–69	817	40	4.9%	0.8 (0.6–1.3)	0.9 (0.6–1.4)
70–79	468	33	7.1%	1.3 (0.8–1.9)	1.3 (0.8–2.1)
80+	223	53	23.8%	5.1 (3.5–7.6)	6.9 (4.6–10.6)
p-for trend				<0.001	<0.001
Gender
Male	1034	59	5.7%	Reference	Reference
Female	1712	138	8.1%	1.4 (1.1–1.9)	1.2 (0.9–1.6)
SES b tertile
Poorest	890	107	12.0%	4.5 (1.3–3.9)	3.9 (2.2–6.7)
Medium	984	58	6.5%	3.0 (1.3–3.9)	1.8 (1.0–3.3)
Wealthiest	852	25	2.9%	Reference	Reference
p-for trend				<0.001	<0.001
Education
None	172	26	15.1%	11.8 (4.0–34.4)	5.4 (1.7–16.6)
Primary	1473	116	7.9%	5.6 (2.2–14.4)	3.3 (1.3–8.6)
Secondary	42	42	5.6%	3.9 (1.5–10.3)	2.9 (1.2–7.4)
Higher	268	4	1.5%	Reference	Reference
p-for trend				<0.001	0.008

VA, Visual Acuity.

^aOdds ratios from multivariate logistic regression analysis including all listed variables.

^bSocio-economic status.