Table 1.
Demographic characteristics, measures of water, urine, and plasma arsenic species in the Zimapan and Lagunera cohort.
| N (%) | Median (IQR) | Range | |
|---|---|---|---|
| Age (years) | 258 (100) | 35 (32) | 5 – 88 |
| Sex | |||
| Male | 84 (32.6) | ||
| Female | 174 (67.4) | ||
| BMI1 | |||
| Underweight | 30 (11.9) | ||
| Normal | 68 (27.0) | ||
| Overweight | 72 (28.6) | ||
| Obese | 82 (32.5) | ||
| Smoking | |||
| Non-Smoker | 234 (90.7) | ||
| Smoker | 24 (9.3) | ||
| Alcohol Consumption | |||
| No | 203 (78.7) | ||
| Yes | 55 (21.3) | ||
| Recent Seafood Consumption2 | |||
| No | 230 (89.5) | ||
| Yes | 27 (10.5) | ||
| Water iAs (μg/L) | 258 (100) | 22.1 (41.6) | 3.1 – 215.2 |
| Urinary Arsenic Measures3 (μg/L) | 232 (90) | ||
| U-iAs | 3.5 (4.3) | 0.3 – 26.9 | |
| U-MMAs | 3.9 (4.3) | 0.4 – 24.2 | |
| U-DMAs | 19.4 (26.5) | 1.4 – 144.8 | |
| U-tAs | 27.7 (34.4) | 3.8 – 164.1 | |
| Plasma Arsenic Measures (ng/L)4 | 242 (94) | ||
| P-iAs | 185.4 (128.0) | 10.8 – 5,071.7 | |
| P-MMAs | 188.3 (217.2) | 47.5 – 2844.5 | |
| P-DMAs | 336.4 (326.2) | 83.4 – 3,155.3 | |
| P-tAs | 718.4 (598.3) | 221.3 – 9,669.9 | |
| Urinary Arsenic Measures3 (%) | 232 (90) | ||
| %U-iAs | 12.4 (8.0) | 3.5 – 64.4 | |
| %U-MMAs | 14.8 (7.7) | 3.3 – 48.0 | |
| %U-DMAs | 71.0 (13.5) | 18.9 – 90.8 | |
| Plasma Arsenic Measures (%)4 | 242 (94) | ||
| %P-iAs | 23.7 (21.6) | 3.2 – 62.2 | |
| %P-MMAs | 27.5 (9.1) | 11.4 – 47.0 | |
| %P-DMAs | 46.0 (16.7) | 17.5 – 72.2 |
1
n = 6 missing;
2
n = 1 missing;
3
Urine arsenic measures shown are specific gravity-adjusted; samples with a specific gravity equal to 1.0 (N = 25) were omitted;
4
n = 16 missing. Abbreviations: IQR = inter-quartile range; BMI = body mass index.