Table 4.

Factors associated with knowledge of eye diseases

	Cataract (n=1268)		Glaucoma (n=1268)		AMD (n=1268)
	Odds ratio (95% CI)	p Value	Odds ratio (95% CI)	p Value	Odds ratio (95% CI)	p Value
Heard about the disease
Age:		0.001		<0.001		0.089
40–49 (ref)	1.00	–	1.00	–	1.00	–
50–59	0.46 (0.21 to 1.04)	0.062	0.52 (0.32 to 0.85)	0.009	0.77 (0.47 to 1.26)	0.294
60–69	0.37 (0.17 to 0.83)	0.016	0.33 (0.21 to 0.54)	<0.001	0.69 (0.41 to 1.16)	0.158
70 or above	0.22 (0.10 to 0.49)	<0.001	0.15 (0.09 to 0.24)	<0.001	0.44 (0.23 to 0.84)	0.012
Sex:
Male (ref)	1.00	–	1.00	–	1.00	–
Female	0.82 (0.53 to 1.26)	0.362	0.67 (0.51 to 0.88)	0.004	1.39 (0.94 to 2.05)	0.098
Education:		<0.001		<0.001		0.036
None (ref)	1.00	–	1.00	–	1.00	–
Primary	1.90 (1.17 to 2.94)	0.009	2.31 (1.69 to 3.17)	<0.001	0.97 (0.56 to 1.68)	0.910
Secondary or above	9.80 (4.53 to 21.22)	<0.001	6.99 (4.73 to 10.3)	<0.001	1.62 (0.97 to 2.72)	0.066
Household income:		0.004		<0.001		0.047
$0–10000 (ref)	1.00	–	1.00	–	1.00	–
$10001–25000	1.94 (1.02 to 3.67)	0.042	1.98 (1.31 to 3.00)	0.001	1.61 (0.82 to 3.17)	0.169
$25000+	4.61 (1.82 to 11.72)	0.001	2.89 (1.76 to 4.76)	<0.001	2.33 (1.17 to 4.65)	0.016
Described symptoms correctly
Age:		0.264		0.187	NA	NA
40–49 (ref)	1.00	–	1.00	–
50–59	0.84 (0.59 to 1.19)	0.320	1.09 (0.65 to 1.83)	0.742
60–69	0.76 (0.53 to 1.10)	0.152	1.33 (0.80 to 2.22)	0.275
70 or above	0.67 (0.44 to 1.02)	0.059	0.70 (0.37 to 1.32)	0.273
Sex:
Male (ref)	1.00	–	1.00	–
Female	1.12 (0.86 to 1.45)	0.413	1.65 (1.13 to 2.42)	0.009	NA	NA
Education:		0.001		0.482	NA	NA
None (ref)	1.00	–	1.00	–
Primary	1.60 (1.10 to 2.35)	0.016	1.28 (0.77 to 2.13)	0.339
Secondary or above	2.02 (1.39 to 2.94)	<0.001	1.36 (0.82 to 2.26)	0.234
Household income:		0.501		0.607	NA	NA
$0–10000 (ref)	1.00	–	1.00	–
$10001–25000	0.98 (0.65 to 1.49)	0.937	1.15 (0.67 to 1.99)	0.615
$25000+	1.22 (0.78 to 1.88)	0.384	0.89 (0.48 to 1.64)	0.701
Described pathophysiology correctly (either physiology or anatomy described correctly)
Age:		<0.001		0.003
40–49 (ref)	1.00	–	1.00	–
50–59	0.60 (0.42 to 0.87)	0.006	0.69 (0.35 to 1.37)	0.295
60–69	0.32 (0.21 to 0.50)	<0.001	0.17 (0.07 to 0.51)	0.002
70 or above	0.30 (0.19 to 0.49)	<0.001	0.25 (0.08 to 0.74)	0.013
Sex:
Male (ref)	1.00	–	1.00	–
Female	0.70 (0.53 to 0.94)	0.019	0.80 (0.43 to 1.47)	0.469
Education:		<0.001		<0.001
None (ref)	1.00	–	1.00	–
Primary	2.18 (1.31 to 3.63)	0.003	6.47 (0.83 to 50.4)	0.075
Secondary or above	4.46 (2.74 to 7.27)	<0.001	19.7 (2.68 to 145.3)	0.003
Household income:		0.002		0.103
$0–10000 (ref)	1.00	–	1.00	–
$10001–25000	1.92 (1.17 to 3.14)	0.009	2.25 (0.74 to 6.78)	0.149
$25000+	2.52 (1.51 to 4.20)	<0.001	3.28 (1.08 to 9.97)	0.036

NA = data not analysed due to small number that could describe the symptoms of AMD correctly.

Factors for knowledge on AMD were not analysed due to small numbers with correct knowledge.