Table 5 Associations between heavy metal levels as categorical variable and volume of uterine fibroids
From: Blood cadmium and volume of uterine fibroids in premenopausal women
Quartile | The largest volume (cm3) | ||||||
|---|---|---|---|---|---|---|---|
Unadjusted | Adjusteda | ||||||
β | 95% CI | P | β | 95% CI | P | ||
Cadmium (μg/L) | 1 (<0.9) | Ref. | Ref. | ||||
2 (0.9-1.0) | −0.91 | −2.74-0.91 | 0.317 | −0.47 | −3.16-2.22 | 0.722 | |
3 (1.0-1.2) | −0.77 | −2.60-1.05 | 0.396 | −0.48 | −3.12-2.16 | 0.713 | |
4 (1.2-3.1) | 0.51 | −1.32-2.34 | 0.575 | 1.19 | −1.52-3.90 | 0.376 | |
Lead (μg/dL) | 1 (<1.1) | Ref. | Ref. | ||||
2 (1.1-1.3) | −0.39 | −2.21-1.43 | 0.667 | −0.42 | −2.69-1.85 | 0.707 | |
3 (1.3-1.8) | 0.85 | −0.98-2.67 | 0.353 | 0.85 | −1.67-3.37 | 0.496 | |
4 (1.8-3.2) | −0.77 | −2.59-1.05 | 0.395 | −1.23 | −3.74-1.29 | 0.326 | |
Mercury (μg/L) | 1 (<1.2) | Ref. | Ref. | ||||
2 (1.2-1.7) | −0.54 | −2.44-1.36 | 0.567 | −0.23 | −2.80-2.34 | 0.856 | |
3 (1.7-2.7) | −0.59 | −2.48-1.31 | 0.535 | −1.03 | −3.58-1.52 | 0.415 | |
4 (2.7-4.7) | −0.40 | −2.3-1.49 | 0.668 | −0.65 | −3.15-1.85 | 0.597 | |