Table 4.
Comparison of the exposure level with different birth outcomes (n = 419).
| Adjusted Urinary Heavy Metal Concentration (μg/g Creatinine) | Preterm Delivery θ | Low Birth Weight † | Preterm and Low Birth Weight | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Yes (n = 80) | No (n = 339) | p-Value | Yes (n = 26) | No (n = 393) | p-Value | Yes (n = 18) | No (n = 401) | p-Value | |
| Arsenic | 73.2 | 74.2 | 1.000 | 89.0 | 73.8 | 0.500 | 84.2 | 73.9 | 0.490 |
| Cadmium | 0.8 | 0.8 | 0.743 | 1.4 | 0.8 | 0.020 | 1.4 | 0.8 | 0.014 |
| Selenium | 22.4 | 22.7 | 0.940 | 20.6 | 22.7 | 0.998 | 19.3 | 22.7 | 0.324 |
| Lead | 1.7 | 1.8 | 0.729 | 1.5 | 1.8 | 0.117 | 1.5 | 1.8 | 0.236 |
θ Any delivery before 37 weeks of gestation regardless of birth weight. † Birth weight < 2500 g regardless of gestational age at birth.