Table 1 Distribution of socio-demographic characteristics among cases and controls.
Variables | Non-eye-disease controls | Non-cataract eye-disease controls | ||||
|---|---|---|---|---|---|---|
Cases | ||||||
N (%) | N (%) | p-value* | N (%) | p-value* | ||
Age in years (mean ± SD) | 42.0 ± 6.1 | 41.8 ± 6.6 | 41.5 ± 6.1 | |||
Age group (years) | ||||||
18 - 19 | 1 (0.7) | 1 (0.7) | 4 (2.6) | |||
20 - 29 | 7 (4.6) | 7 (4.6) | 2 (1.3) | |||
30 - 39 | 22 (14.4) | 31 (20.3) | 28 (18.3) | |||
40 - 49 | 123 (80.4) | 113 (73.9) | 119 (77.8) | |||
Sex | ||||||
Male | 73 (47.7) | 73 (47.7) | 73 (47.7) | |||
Female | 80 (52.3) | 80 (52.3) | 80 (52.3) | |||
Religion | 0.35 | 0.07 | ||||
Muslim | 91 (59.5) | 83 (54.2) | 75 (49.0) | |||
Others | 62 (40.5) | 70 (45.8) | 78 (51.0) | |||
Marital status | 0.71 | 0.40 | ||||
Single | 7 (4.6) | 6 (3.9) | 5 (5.3) | |||
Married | 139 (90.8) | 137 (89.5) | 144 (94.1) | |||
Divorce/widow | 6 (3.9) | 10 (6.5) | 4 (2.6) | |||
Education | <0.001 | 0.08 | ||||
No education | 61 (39.9) | 54 (35.3) | 55 (35.9) | |||
Primary | 73 (47.7) | 54 (35.3) | 65 (42.5) | |||
Secondary | 19 (12.4) | 45 (29.4) | 33 (21.6) | |||
Occupation | 0.56 | 0.75 | ||||
Farmer | 26 (17.0) | 30 (19.6) | 26 (17.0) | |||
Housewife | 76 (49.7) | 69 (45.1) | 72 (47.1) | |||
Labour | 11 (7.2) | 10 (6.5) | 9 (5.9) | |||
Business | 12 (7.8) | 14 (9.2) | 13 (8.5) | |||
Teacher | 3 (2.0) | 3 (2.0) | 7 (4.6) | |||
Others | 25 (16.3) | 27 (17.6) | 26 (17.0) | |||
Household members | 0.93 | 0.64 | ||||
≤4 | 39 (25.5) | 40 (26.1) | 41 (26.6) | |||
5-7 | 93 (60.8) | 94 (61.4) | 86 (56.2) | |||
>7 | 21 (13.7) | 19 (12.4) | 26 (17.0) | |||
Household income (in previous year) taka/month | 0.99 | 0.04 | ||||
≤3000 | 50 (32.7) | 50 (32.7) | 31 (20.3) | |||
3001-7500 | 66 (43.1) | 65 (42.5) | 84 (54.9) | |||
>7500 | 37 (24.2) | 38 (24.8) | 38 (24.8) | |||
Socioeconomic status | 0.33 | 0.64 | ||||
Lower | 127 (83.0) | 120 (78.4) | 124 (81.0) | |||
Middle | 26 (17.0) | 33 (21.6) | 29 (19.0) | |||
Family history of cataract | <0.001 | <0.001 | ||||
Yes | 54 (35.3) | 26 (17.0) | 29 (19.0) | |||
No | 99 (64.7) | 127 (83.0) | 124 (81.0) | |||
Hx of working in sunlight | 0.05 | 0.58 | ||||
Yes | 125 (81.7) | 110 (71.9) | 121 (79.1) | |||
No | 28 (18.3) | 43 (28.1) | 32 (20.9) | |||
Sunlight exposure (years) | 0.03 | 0.08 | ||||
>18 | 70 (45.8) | 51 (33.3) | 54 (35.3) | |||
Ex. ≤18 | 55 (35.9) | 59 (38.6) | 67 (43.8) | |||
Not exposed | 28 (18.3) | 43 (28.1) | 32 (20.9) | |||
Smoking status | 0.08 | 0.001 | ||||
Current or past | 55 (35.9) | 45 (29.4) | 36 (23.5) | |||
Never smoked | 98 (64.1) | 108 (70.6) | 117 (76.5) | |||
Current no.cigarettes/day | 0.72 | 0.03 | ||||
>10 | 25 (16.3) | 22 (14.4) | 12 (7.8) | |||
≤10 | 17 (11.1) | 15 (9.8) | 17 (11.1) | |||
None | 111 (72.5) | 116 (75.8) | 124 (81.0) | |||