Table 3.
Crude mean difference (95% CI) for the relationship between BMI categories or an IQR-increase in BMI and urinary arsenic metabolites.
| Mean Difference (95% CI) in Urinary Arsenic Species | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| %U-iAs |
%U-MMAs |
%U-DMAs |
|||||||
| N | Mean (95% CI) |
Mean Difference (95% CI) |
Mean (95% CI) |
Mean Difference (95% CI) |
Mean (95% CI) |
Mean Difference (95% CI) |
|||
| Underweight/ Normal BMI |
285 | 11.5 (10.7, 12.3) |
0.0 (ref) | 16.8 (16.1, 17.4) |
0.0 (ref) | 71.7 (70.6, 72.8) |
0.0 (ref) | ||
| Overweight BMI |
412 | 9.94 (9.36, 10.6) |
−1.61 (−2.55, −0.59) |
14.9 (14.4, 15.4) |
−1.91 (−2.77, −1.05) |
75.2 (74.3, 76.0) |
3.52 (2.22, 4.90) |
||
| Obese BMI |
294 | 8.98 (8.49, 9.47) |
−2.57 (−3.48, −1.63) |
13.3 (12.9, 13.8) |
−3.43 (−4.21, −2.64) |
77.7 (76.9, 78.5) |
6.00 (4.72, 7.27) |
||
| Severely Obese BMI |
158 | 8.36 (7.67, 9.01) |
−3.19 (−4.23, −2.15) |
12.6 (11.6, 13.8) |
−4.21 (−5.33, −2.94) |
79.1 (77.8, 80.2) |
7.40 (5.68, 9.09) |
||
| IQR* Δ in BMI | 1149 | −1.43 (−1.82, −1.03) |
−1.99 (−2.44, −1.52) |
3.42 (2,80, 4.09) |
|||||
*
IQR = 7.4 kg/m2