Table 1 Summary statistics for the study population
From: Diet and toenail arsenic concentrations in a New Hampshire population with arsenic-containing water
| Variable | Total | Water arsenic | Water arsenic |
|---|---|---|---|
| population | <1 μg/L | ≥1 μg/L | |
| Drinking water arsenic (μg/L) | 2.72 (0.35) | 0.27 (0.01) | 10.86 (1.36) |
| Toenail arsenic (μg/g) | 0.12 (0.005) | 0.10 (0.004) | 0.19 (0.02) |
| Age (years) | 61.1 (0.3) | 61.2 (0.4) | 60.7 (0.7) |
| Intake from household tap water (# 8 oz. glasses/d) | 5.0 (0.1) | 5.1 (0.1) | 5.0 (0.2) |
| Energy intake (kcal/d) | 1920 (22) | 1912 (25) | 1944 (42) |
| Sex | |||
| Female | 330 [61] | 254 [39] | 76 [39] |
| Male | 522 [39] | 401 [61] | 120 [61] |
| Smoking Status | |||
| Never Smoked | 275 [32] | 208 [32] | 67 [34] |
| Has Smoked | 577 [68] | 447 [68] | 130 [66] |
| Season | |||
| Winter | 168 [20] | 127 [19] | 41 [21] |
| Spring | 171 [20] | 137 [21] | 34 [17] |
| Summer | 246 [29] | 175 [27] | 71 [36] |
| Fall | 267 [31] | 216 [33] | 51 [26] |
| Case–control Status | |||
| Control | 211 [25] | 167 [25] | 44 [22] |
| Bladder Cancer | 248 [29] | 168 [28] | 62 [31] |
| Basal Cell Skin Cancer | 198 [23] | 150 [23] | 48 [24] |
| Squamous Cell Skin Cancer | 195 [23] | 152 [23] | 43 [22] |