Characteristics of cholera cases compared with non-cholera diarrhoea cases in a study site in Kolkata, India, 1 May 2003 to 30 April 2004
| No. (%) with the following characteristics | Cholera cases | Non-cholera diarrhoea cases | Crude OR | Adjusted* OR |
|---|---|---|---|---|
| (n = 126) | (n = 2662) | (95% CI), p value | (95% CI), p value | |
| *Adjusted for age and correlation within household. | ||||
| †Adjusted for age only. | ||||
| With other household member with cholera | ||||
| None | 114 (90) | 2573 (97) | Ref | Ref |
| One or more | 12 (10) | 89 (3.3) | 3.0 (1.6 to 5.7), <0.01 | 3.1 (1.6 to 5.8), <0.01† |
| Age | ||||
| ⩾60 months | 80 (63) | 1841 (69) | Ref | Ref |
| <60 months | 46 (37) | 821 (31) | 1.3 (0.9 to 1.9), 0.18 | 1.3 (0.9 to 1.9), 0.15 |
| Literacy of adults ⩾15 years old | ||||
| Literate | 20 (42) | 682 (58) | Ref | Ref |
| Illiterate | 28 (58) | 495 (42) | 1.9 (1.1 to 3.5), 0.03 | 1.9 (1.1 to 3.4), 0.03 |
| Monthly household expenditure | ||||
| >44 US$ (2000 INR) | 82 (65) | 1785 (68) | Ref | Ref |
| ⩽44 US$ (2000 INR) | 44 (35) | 855 (32) | 1.1 (0.8 to 1.6), 0.6 | 1.1 (0.8 to 1.7), 0.5 |
| Household members wash hands after defecation | ||||
| Always | 79 (63) | 1672 (63) | Ref | Ref |
| Sometimes or never | 47 (37) | 988 (37) | 1.0 (0.7 to 1.5), 1.0 | 1.0 (0.7 to 1.4), 0.9 |
| Type of house | ||||
| Brick | 110 (89) | 2239 (85) | Ref | Ref |
| Semi-brick/mud | 14 (11) | 398 (15) | 0.7 (0.4 to 1.3), 0.2 | 0.7 (0.4 to 1.3), 0.3 |
| Drinking water source | ||||
| Bottled or tap | 124 (98) | 2624 (99) | Ref | Ref |
| Well, pump, or vendor | 2 (2) | 37 (1) | 1.1 (0.3 to 4.8), 0.9 | 1.2 (0.3 to 5.0), 0.9 |