Table 2:
Associations between sociodemographic and lifestyle confounders and lead exposures at different life stages.
| Table 2: Original to this manuscript. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Blood Pb (μg/dL) : Mean (±SD) | Bone Pb1 (μg/g): Mean (±SD) | |||||||||||
| N | 1st Tri | 2nd Tri | 3rd Tri | N | Childhood | N | Peripuberty | N | Patella | N | Tibia | |
| 230 | 386 | 205 | 259 | 173 | ||||||||
| Child’s Sex | ||||||||||||
| Male | 112 | 6.06±3.84 | 5.24±4.06 | 5.67±3.48 | 186 | 15.48±7.29 | 98 | 3.60±3.22 | 130 | 8.64±10.11 | 81 | 7.18±10.31 |
| Female | 118 | 6.36±5.08 | 5.25±4.67 | 5.73±4.46 | 200 | 15.18±6.94 | 107 | 3.34±2.68 | 129 | 9.68±11.05 | 92 | 8.64±9.65 |
| P value2 | 0.61 | 0.98 | 0.91 | 0.68 | 0.53 | 0.43 | 0.34 | |||||
| Enrollment Cohort | ||||||||||||
| 2 (1997–2000) | 73 | 8.68±5.83 | 7.29±4.98 | 7.47±4.84 | 144 | 17.61±8.41 | 59 | 3.15±2.35 | 113 | 11.70±11.45 | 103 | 11.70±11.45 |
| 3 (2001–2005) | 157 | 5.07±3.17 | 4.29±3.70 | 4.89±3.25 | 242 | 13.97±5.80 | 146 | 3.59±3.15 | 146 | 7.20±9.45 | 70 | 7.20±9.45 |
| P value | <0.001 | <0.001 | <0.001 | <0.001 | 0.33 | <0.001 | 0.004 | |||||
| Mother’s Education (y) | ||||||||||||
| Did not complete secondary (<9) | 29 | 6.10±4.61 | 5.30±3.12 | 5.49±3.21 | 48 | 16.14±6.84 | 22 | 3.26±1.41 | 32 | 7.13±9.26 | 27 | 5.69±10.70 |
| Completed somehigh school (9 to <12) | 94 | 6.45±4.62 | 5.36±4.85 | 6.13±5.00 | 156 | 16.12±8.20 | 79 | 3.50±2.92 | 101 | 11.05±9.91 | 63 | 9.85±9.29 |
| Completed high school (12) | 75 | 6.01±4.65 | 5.28±4.64 | 5.45±3.09 | 129 | 15.26±6.49 | 75 | 3.66±3.33 | 89 | 6.46±9.96 | 59 | 6.66±9.65 |
| Higher education (>12) | 32 | 6.10±3.92 | 4.78±3.19 | 5.23±3.20 | 53 | 12.42±3.99 | 29 | 3.03±2.85 | 37 | 12.27±13.11 | 24 | 8.75±11.18 |
| P trend3 | 0.75 | 0.63 | 0.42 | 0.004 | 0.87 | 0.72 | 0.85 | |||||
| Peri-pubertal SSB Intake: Mean (ml) | ||||||||||||
| 1st Quartile: 141.52 | 53 | 6.22±4.44 | 6.26±6.63 | 6.29±5.21 | 95 | 15.26±6.71 | 46 | 3.50±2.31 | 67 | 9.14±11.26 | 49 | 7.47±10.04 |
| 2nd Quartile: 399.74 | 62 | 6.35±4.32 | 4.78±3.43 | 5.62±3.51 | 104 | 14.87±6.67 | 59 | 3.25±2.93 | 70 | 8.16±11.27 | 50 | 8.13±9.21 |
| 3rd Quartile: 663.00 | 52 | 6.18±3.66 | 5.43±3.08 | 6.35±3.77 | 94 | 15.54±5.85 | 48 | 3.44±2.88 | 57 | 10.92±10.74 | 37 | 8.35±10.50 |
| 4th Quartile: 1097.33 | 63 | 6.10±5.40 | 4.69±3.58 | 4.77±3.31 | 93 | 15.69±8.95 | 52 | 3.69±3.53 | 65 | 8.72±8.88 | 37 | 8.00±10.67 |
| P trend | 0.83 | 0.12 | 0.09 | 0.55 | 0.66 | 0.82 | 0.77 | |||||
1:
Maternal bone samples from postnatal measurements.
2:
P value from 2-sample t test.
3:
P value from linear regression analysis.