Table 3.
ORs for relationship between water As concentrations and skin hyperkeratosis.
| As concentration (μg/L) | Totala (skin hyperkaratosis)b | OR (95% CI)c | p-Value |
|---|---|---|---|
| 0.34–10 | 69 (11) | 1.00 | — |
| 11–50 | 51 (14) | 1.977 (0.777–5.029) | 0.15241 |
| 51–100 | 30 (9) | 2.477 (0.812–7.556) | 0.11088 |
| 101–200 | 80 (24) | 2.666 (1.140–6.231) | 0.02364 |
| 201–300 | 33 (16) | 5.180 (1.914–14.020) | 0.00120 |
| 301–826 | 35 (17) | 6.951 (2.551–18.938) | 0.00015 |
p < 0.0001 for trend across all categories.
a
Total number of subjects in this category; one missing value for As measure.
b
Number of subjects with skin hyperkeratosis.
c
Data shown are OR (95% CI) adjusted for sex, age, smoking, alcohol use, and pesticide use.