Table 3 Odds ratios (OR) and 95% confidence intervals (CI) of bladder cancer for different indices of exposure to disinfection by products from a hospital-based case-control study conducted in Spain (adapted from Villanueva et al 2007, ref. [25])
Quartiles of exposure | Ingestion | Inhalation/Skin absorption |
|---|---|---|
| Â | OR (95%CI) | OR (95%CI) |
First (Lowest) | 1.0 (ref) | 1.0 (ref) |
Second | 0.9 (0.6-1.3) | 1.3 (0.9-1.9) |
Third | 1.2 (0.8-1.7) | 1.4 (0.9-2.1) |
Fourth (highest) | 1.4 (0.9-2.0) | 1.8 (1.2-2.9) |
p-value for linear trend | 0.09 | <0.01 |