Table 3.
General information and blood lead levels of the exposed subjects and control groupa
| Variable | Exposed group (n = 31) | Control group (n = 268) | p value* |
|---|---|---|---|
| Age (years) | 26.03 (6.17) | 24.13 (6.76) | 0.135 |
| Gestational age (weeks) | 22.71 (8.06) | 24.22 (8.75) | 0.358 |
| Number of pregnancies | 2.55 (1.38) | 2.23 (1.47) | 0.253 |
| Body mass index (kg/m2) | 28.81 (4.79) | 27.04 (5.70) | 0.098 |
| Hemoglobin (g/dL) | 12.97 (1.11) | 12.50 (1.36) | 0.065 |
| Monthly income per person, USD | 165.62 (130.59) | 138.00 (146.28) | 0.316 |
| Blood lead levels (μg/dL) | 4.00 (4.08) | 2.65 (1.75) | 0.002** |
aValues shown as mean (standard deviation)
* p value was calculated from Student t-test
** p value from Log BLL