Relative risks (RR) for associations with Crohn’s disease
| Exposure before the age of 11 | Exposure between the age of 11 and 16 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Cases (n=l10) | Controls (n=337) | Unadjusted RR (95% CI) | Adjusted3-150 RR (95% CI) | Cases (n=110) | Controls (n=337) | Unadjusted RR (95% CI) | Adjusted3-150 RR (95% CI) | ||
| Bed shared with other child | |||||||||
| Always or sometimes | 37 | 120 | 0.92 (0.6–1.5) | 1.00 (0.6–1.6) | Variable not ascertained | ||||
| Never | 69 | 205 | 1.0 | 1.0 | |||||
| Bedroom shared with other child | |||||||||
| Always or sometimes | 67 | 221 | 0.85 (0.5–1.4) | 0.89 (0.6–1.4) | 46 | 172 | 0.65 (0.4–1.0) | 0.66 (0.4–1.1) | |
| Never | 40 | 112 | 1.0 | 1.0 | 64 | 155 | 1.0 | 1.0 | |
| Running hot water | |||||||||
| Never or sometimes | 27 | 125 | 0.55 (0.3–0.9) | 0.56 (0.3–0.9)3-151 | 26 | 90 | 0.84 (03–1.4) | 1.74 (0.8–3.8) | |
| Always | 78 | 198 | 1.0 | 1.0 | 82 | 239 | 1.0 | 1.0 | |
| Fixed bath or shower | |||||||||
| Sometimes or never | 34 | 119 | 0.82 (0.5–1.4) | 1.55 (0.8–3.2) | 29 | 80 | 1.07 (0.64.7) | 1.83 (0.9–3.7) | |
| Always | 74 | 213 | 1.0 | 1.0 | 84 | 247 | 1.0 | 1.0 | |
| Inside toilet | |||||||||
| Sometimes or never | 39 | 148 | 0.73 (0.5–1.2) | 1.23 (0.7–2.3) | 29 | 106 | 0.76 (0.5–1.3) | 0.94 (0.5–1.8) | |
| Always | 67 | 186 | 1.0 | 1.0 | 81 | 226 | 1.0 | 1.0 | |
| Home shared with other family | |||||||||
| Always or sometimes | 11 | 27 | 1.25 (0.6–2.8) | 0.96 (0.6–1.5) | 8 | 22 | 1.11 (0.5–2.6) | 1.24 (03–2.9) | |
| Never | 97 | 298 | 1.0 | 1.0 | 100 | 306 | 1.0 | 1.0 | |
| Central heating installed | |||||||||
| Sometimes or never | 77 | 259 | 0.69 (0.4–1.2) | 0.91 (0.5–1.7) | 67 | 224 | 0.74 (0.5–1.2) | 0.97 (0.5–1.8) | |
| Always | 31 | 72 | 1.0 | 1.0 | 43 | 106 | 1.0 | 1.0 | |
| Parents owned a car | |||||||||
| Sometimes or never | 71 | 220 | 0.93 (0.6–1.5) | 1.37 (0.8–2.4) | 62 | 200 | 0.83 (0.5–1.3) | 1.09 (0.6–1.9) | |
| Always | 36 | 104 | 1.0 | 1.0 | 48 | 128 | 1.0 | 1.0 | |