Variables | Cases N (%) | Non-eye-disease controls | Non-cataract eye-disease controls | ||
---|---|---|---|---|---|
N (%) | p-value* | N (%) | p-value* | ||
Cooking history | |||||
Ever cooked | 0.18 | 0.59 | |||
Yes | 108 (70.6) | 100 (65.4) | 105 (68.6) | ||
No | 45 (29.4) | 53 (34.6) | 48 (31.4) | ||
Frequency | 0.56 | 1.00 | |||
Regular | 87 (80.6) | 84 (84.0) | 83 (79.0) | ||
Occasional | 21 (19.4) | 16 (16.0) | 22 (21.0) | ||
Place | 0.22 | 0.16 | |||
Living house | 33 (30.6) | 21 (21.0) | 20 (19.0) | ||
Separate house | 75 (69.4) | 79 (79.0) | 85 (81.0) | ||
Duration | 0.10 | 0.003 | |||
≤26 yr | 53 (49.1) | 48 (48.0) | 65 (61.9) | ||
>26 yr | 55 (50.9) | 52 (52.0) | 40 (38.1) | ||
Wood/dry leaves | |||||
Ever used | 0.05 | 0.45 | |||
Used | 106 (69.3) | 95 (62.1) | 102 (66.7) | ||
Never used | 47 (30.7) | 58 (37.9) | 51 (33.3) | ||
Age at 1st exposure | 0.15 | 0.42 | |||
Never exposed | 47 (30.7) | 58 (37.9) | 51 (33.3) | ||
Exposed at ≤15 years | 56 (36.6) | 45 (29.4) | 60 (39.2) | ||
Exposed at <15 years | 50 (32.7) | 50 (32.7) | 42 (27.5) | ||
Frequency of use | 0.12 | 0.63 | |||
Never used | 47 (30.7) | 58 (37.9) | 51 (33.3) | ||
Used≤14 times/week | 98 (64.1) | 85 (55.6) | 90 (58.8) | ||
Used>14 times/week | 8 (5.2) | 10 (6.5) | 12 (7.8) | ||
Intensity of use | 0.09 | 0.44 | |||
Never used | 47 (30.7) | 58 (37.9) | 51 (33.3) | ||
Used≤20 hr/week | 64 (41.8) | 50 (32.7) | 56 (36.6) | ||
Used>20 hr/week | 42 (27.5) | 45(29.4) | 46 (30.1) | ||
Duration of use | 0.15 | 0.02 | |||
Never used | 47 (30.7) | 58 (37.9) | 51 (33.3) | ||
Used ≤26yr | 52 (34) | 43 (28.1) | 61 (39.9) | ||
Used >26yr | 54 (35.3) | 52 (34.0) | 41 (26.8) | ||
Life time exposure | 0.15 | 0.74 | |||
Never used | 47 (30.7) | 58 (37.9) | 51 (33.3) | ||
Used≤25000 hr | 55 (35.9) | 44 (28.8) | 52 (34.0) | ||
Used>25000 hr | 51 (33.3) | 51 (33.3) | 50 (32.7) | ||
Rice straw | |||||
Ever used | 0.05 | 0.27 | |||
Used | 29 (19.0) | 18 (11.8) | 22 (14.4) | ||
Never used | 124 (81.0) | 135 (88.2) | 131 (85.6) | ||
Age at 1st exposure | 0.03 | 0.22 | |||
Never exposed | 124 (81.0) | 135 (88.2) | 131 (85.6) | ||
Exposed at ≤15 years | 11 (7.2) | 11 (7.2) | 13 (6.5) | ||
Exposed at <15 years | 18 (11.8) | 7 (4.6) | 9 (7.8) | ||
Frequency of use | 0.14 | 0.19 | |||
Never used | 124 (81.0) | 135 (88.2) | 131 (85.6) | ||
Used≤14 times/week | 25 (16.3) | 18 (11.8) | 21 (13.7) | ||
Used>14 times/week | 4 (2.6) | 0 (0.0) | 1 (0.7) | ||
Intensity of use | 0.15 | 0.28 | |||
Never used | 124 (81) | 135 (88.2) | 131 (85.6) | ||
Used≤20 hr/week | 16 (10.5) | 10 (6.5) | 12 (7.8) | ||
Used>20 hr/week | 13 (8.5) | 8 (5.2) | 10 (6.5) | ||
Duration of use | 0.07 | 0.42 | |||
Never used | 124 (81) | 135 (88.2) | 131 (85.6) | ||
Used ≤26yr | 12 (7.8) | 10 (6.5) | 11 (7.2) | ||
Used >26yr | 17 (11.1) | 8 (5.2) | 11 (7.2) | ||
Life time exposure | 0.15 | 0.55 | |||
Never used | 124 (81) | 135 (88.2) | 131 (85.6) | ||
Used≤24000 hr | 12 (7.8) | 7 (4.6) | 9 (5.9) | ||
Used>24000 hr | 17 (11.1) | 11 (7.2) | 13 (8.5) | ||
Cow dung | |||||
Ever used | 0.20 | 0.08 | |||
Used | 26 (17.0) | 34 (22.2) | 37 (24.2) | ||
Never used | 127 (83.0) | 119 (77.8) | 116 (75.8) | ||
Age at 1st exposure | 0.45 | 0.13 | |||
Never exposed | 127 (83.0) | 119 (77.8) | 116 (75.8) | ||
Exposed at ≤14 years | 14 (9.2) | 18 (11.8) | 25 (16.3) | ||
Exposed at <14 years | 12 (7.8) | 16 (10.5) | 12 (7.8) | ||
Frequency of use | 0.28 | 0.16 | |||
Never used | 127 (83.0) | 119 (77.8) | 116 (75.8) | ||
Used≤14 times/week | 24 (15.7) | 34 (22.2) | 34 (22.2) | ||
Used>14 times/week | 2 (1.3) | 0 (0.0) | 3 (2.0) | ||
Intensity of use | 0.42 | 0.22 | |||
Never used | 127 (83.0) | 119 (77.8) | 116 (75.8) | ||
Used≤20 hr/week | 11 (7.2) | 16 (10.5) | 15 (9.8) | ||
Used>20 hr/week | 15 (9.8) | 18 (11.8) | 22 (14.4) | ||
Duration of use | 0.44 | 0.12 | |||
Never used | 127 (83.0) | 119 (77.8) | 116 (75.8) | ||
Used ≤26yr | 10 (6.5) | 14 (9.2) | 19 (12.4) | ||
Used >26yr | 16 (10.5) | 20 (13.1) | 18 (11.8) | ||
Life time exposure | 0.45 | 0.19 | |||
Never used | 127 (83.0) | 119 (77.8) | 116 (75.8) | ||
Used≤31500 hr | 12 (7.8) | 16 10.5) | 20 (13.1) | ||
Used>31500 hr | 14 (9.2) | 18 (11.8) | 17 (11.1) |