Table 2.
Distribution of demographic variables, arsenic exposure level, and percentage of monomethylarsonic acid (MMA) between skin cancer cases and age and sex matched controls.
| Variable | Group | Case | Control | OR (95% CI) | |||
|---|---|---|---|---|---|---|---|
| Number | (%) | Number | (%) | ||||
| Age | (Mean ± Std deviation) | 56.13 ± 6.87 | 54.38 ± 6.26 | ||||
|
| |||||||
| Gender | Male | 46 | (65.71) | 138 | (65.71) | ||
| Female | 24 | (34.29) | 72 | (34.29) | |||
|
| |||||||
| Cumulative as exposure (ppm-year) |
<10.0 | 4 | (5.71) | 40 | (19.05) | 1.00 | (Referent) |
| 10.0–19.9 | 22 | (31.43) | 62 | (29.52) | 3.55 | (1.14–11.06) | |
| 20.0+ | 31 | (44.29) | 59 | (28.10) | 5.25 | (1.72–16.05) | |
| Unknown | 13 | (18.57) | 49 | (23.33) | 2.65 | (0.80–8.77) | |
|
| |||||||
| MMA percentage (%) | 0–13.81 | 21 | (30.00) | 94 | (44.76) | 1.00 | (Referent) |
| 13.81+ | 36 | (51.43) | 80 | (38.10) | 2.01 | (1.09–3.73) | |
| Unknown | 13 | (18.57) | 36 | (17.14) | 1.61 | (0.73–3.57) | |