Table 5:
Calculated Effective Cases from Selected Arsenic Epidemiology Results for Case Study; Information Presented in Tables 1 and 3 of Cohort Study by Chen et al. (2010)a
| Cumulative iAs water exposure, μg/L · years | Adjusted RR (95% CI) | Cases | Effective Cases | Effective Expected Number |
|---|---|---|---|---|
| < 400 | -- | 6 | 6.00 | 6 |
| 400–1,000 | 1.11 (0.27 – 4.54) | 3 | 2.84 | 2.56 |
| 1,000–5,000 | 2.33 (0.86 – 6.36) | 12 | 10.65 | 4.57 |
| 5,000–10,000 | 3.77 (1.13 – 12.6) | 5 | 4.72 | 1.25 |
| >10,000 | 7.49 (2.70 – 20.8) | 11 | 9.56 | 1.28 |
a
The information in the first three columns is directly from Chen et al. (2010). The last two columns are computed as described in section 2.5.1.