Table 1.
Characteristics of the study populations from Arizona and Sonora.
| SAS† | BAsES† | WBBD† | This study† (pooled) | |
|---|---|---|---|---|
| Total n | 140 | 281 | 203 | 624 |
| Age◆, mean (SD) | 45 (12.8) | 48 (16.0) | 52 (8.4) | 49 (13.5) |
| Smoking, % (never/former/current) | 77.1/15.0/7.9 | 60.5/23.1/16.4 | 55.2/35.0/9.8 | 62.5/25.2/12.3 |
| Ethnicity, % (hispanic/non-hispanic) | 100/0 | 67.3/32.7 | 34.0/66.0 | 63.8/36.2 |
| SNP genotypes. % | ||||
| 7388 (GG/GC/CC) | 57.9/37.1/5.0 | 71.9/24.9/3.2 | 69.5/28.1/2.4 | 67.9/28.7/3.4 |
| M287T (TT/TC/CC) | 92.1/7.9/0.0 | 80.4/19.2/0.4 | 78.3/20.2/1.5 | 82.4/17.0/0.6 |
| Weight, mean* (SD) | 76.1 (13.2) | 72.8 (16.2) | 72.8 (15.9) | 73.1 (15.5) |
| Height, mean^ (SD) | 157.9 (5.1) | 158.9 (7.2) | 162.7 (6.2) | 159.9 (6.7) |
| Body mass index, n (%) | ||||
| underweight (≤18.4) | 0 (0.0) | 5 (1.8) | 0 (0.0) | 5 (0.8) |
| normal (18.5–24.9) | 27 (19.3) | 85 (30.2) | 77 (37.9) | 189 (30.3) |
| overweight (25–29.9) | 45 (32.1) | 77 (27.4) | 72 (35.5) | 194 (31.1) |
| obese (≥30) | 68 (48.6) | 114 (40.6) | 54 (26.6) | 236 (37.8) |
| Total arsenic in drinking water (μg/L), mean (SD) | 66.3 (38.0) | 24.3 (88.5) | NA | NA |
| Total urinary arsenic (μg/L), mean (SD) | 160.2 (160.2) | 31.9 (63.5) | 10.3 (7.6) | 53.6 (104.6) |
| InAs (μg/L), mean(SD) | 19.9 (21.7) | 4.2 (8.0) | 0.4 (0.5) | 6.5 (13.8) |
| uMMA ((μg/L), mean (SD) | 15.9 (17.7) | 3.8 (10.6) | 1.1 (0.8) | 5.7 (12.4) |
| uDMA (μg/L), mean (SD) | 124.4 (125.0) | 23.8 (45.7) | 8.7 (6.8) | 41.5 (80.5) |
| uDMA/uMMA, mean (SD) | 9.2 (7.0) | 8.2 (4.9) | 8.6 (4.6) | 8.5 (5.4) |
SD: standard deviation. NA: Not available.
†
All parameters presented for adult women only.
◆
Age reported in years.
*
Weight reported in Kg.
^
Height reported in centimeters.