Table 3.
Regression Coefficients from Linear Regression Models for Postural Balance Testin Conditions and Manganese and Lead Exposure Measures.
| Unadjusted | Adjusted | ||||
|---|---|---|---|---|---|
|
| |||||
| Exposure | Postural Balance Testing Condition | β | SE | β | SE |
| ln Hair Mn a | |||||
| Sway Length | Standing on Foam, Eyes Open | 0.03 * | 0.03 | 0.07 ** | 0.03 |
| Standing on Foam, Eyes Closed | 0.04 | 0.03 | 0.08 ** | 0.03 | |
| Sway Area | Eyes Closed | 0.13 * | 0.08 | 0.11 | 0.08 |
| Standing on Foam, Eyes Open | 0.1 * | 0.06 | 0.14 ** | 0.06 | |
| Standing on Foam, Eyes Closed | 0.14 ** | 0.07 | 0.23 ** | 0.06 | |
| Medio-Lateral | Eyes Closed | 0.06 | 0.05 | 0.09 ** | 0.04 |
| Standing on Foam, Eyes Open | 0.07 * | 0.04 | 0.09 ** | 0.04 | |
| Standing on Foam, Eyes Closed | 0.1 ** | 0.04 | 0.09 ** | 0.04 | |
| Anterior-Posterior | Eyes Closed | 0.1 ** | 0.04 | 0.11 ** | 0.04 |
| Standing on Foam, Eyes Closed | 0.08 ** | 0.04 | 0.12 ** | 0.03 | |
| ln Blood Mn a | |||||
| Medio-Lateral | Eyes Closed | 0.32 ** | 0.16 | 0.36 ** | 0.14 |
| Standing on Foam, Eyes Open | 0.15 | 0.14 | 0.23 * | 0.13 | |
| TWD a | |||||
| Sway Length | Eyes Closed | −0.01 | 0.01 | − 0.02 * | 0.01 |
| Standing on Foam, Eyes Open | −0.01 | 0.01 | − 0.01 * | 0.01 | |
| Sway Area | Eyes Open | −0.02 | 0.02 | − 0.03 * | 0.02 |
| Eyes Closed | −0.04 | 0.02 | − 0.05 ** | 0.02 | |
| Bending, Eyes Open | −0.02 | 0.02 | − 0.03 * | 0.02 | |
| Medio-Lateral | Bending, Eyes Open | − 0.03 ** | 0.01 | −0.03** | 0.01 |
| Anterior-Posterior | Eyes Open | − 0.02 ** | 0.01 | − 0.03 ** | 0.01 |
| Eyes Closed | − 0.02 * | 0.01 | − 0.03 ** | 0.01 | |
| ln Blood Pb b | |||||
| Sway Length | Eyes Open | 0.25 ** | 0.07 | 0.12 * | 0.07 |
| Eyes Closed | 0.29 ** | 0.07 | 0.28 ** | 0.08 | |
| Standing on Foam, Eyes Open | 0.23 ** | 0.06 | 0.13 * | 0.06 | |
| Standing on Foam, Eyes Closed | 0.19 ** | 0.07 | 0.1 | 0.08 | |
| Bending, Eyes Open | 0.15 ** | 0.06 | 0.16 ** | 0.06 | |
| Sway Area | Eyes Open | 0.31 * | 0.16 | 0.22 | 0.16 |
| Eyes Closed | 0.5** | 0.17 | 0.43 ** | 0.18 | |
| Standing on Foam, Eyes Open | 0.40 ** | 0.15 | 0.19 | 0.16 | |
| Standing on Foam, Eyes Closed | 0.42 ** | 0.15 | 0.27 * | 0.15 | |
| Medio-Lateral | Eyes Open | 0.24 ** | 0.1 | 0.11 | 0.1 |
| Eyes Closed | 0.22 ** | 0.1 | 0.25 ** | 0.1 | |
| Standing on Foam, Eyes Open | 0.28 ** | 0.09 | 0.14 | 0.09 | |
| Anterior-Posterior | Eyes Closed | 0.31 ** | 0.1 | 0.28 ** | 0.1 |
| Standing on Foam, Eyes Closed | 0.27 ** | 0.08 | 0.19 ** | 0.09 | |
a
Adjusted for Gender, Height/Weight Ratio, Parent IQ, ln Blood Pb, Parent Education, Age
b
Adjusted for Gender, Height/Weight Ratio, Parent IQ, ln Hair Mn, ln Blood Mn, TWD, Parent Education, Age
*
p <0.10
**
p <0.05