Table 3.
Estimated coefficients [β (95% confidence intervals)] of OH-PCB concentrations in multiple linear regression models predicting Bayley Scales of Infant Development in 16-month-old children from eastern Slovakia, 2002–2004.a
| Log-transformed exposure variables | MDI | PDI |
|---|---|---|
| Maternal sera (n = 147) | ||
| 4-OH-CB-107 | −1.76 (−3.34 to −0.17)* | −1.66 (−5.40 to 2.10) |
| 3-OH-CB-153 | 0.56 (−1.54 to 2.66) | 1.71 (−0.89 to 4.30) |
| 4-OH-CB-146 | −0.18 (−1.77 to 1.40) | 1.29 (−1.55 to 4.14) |
| 3′-OH-CB-138 | 0.23 (−1.81 to 2.27) | 1.73 (−0.95 to 4.41) |
| 4-OH-CB-187 | −0.11 (−2.12 to 1.89) | 0.90 (−1.90 to 3.70) |
| 4′-OH-CB-172 | 0.46 (−1.50 to 2.42) | 0.88 (−1.55 to 3.32) |
| Sum of six OH-PCBs | −0.13 (−2.15 to 1.90) | 0.96 (−2.00 to 3.92) |
| Cord sera (n = 80) | ||
| 4-OH-CB-107 | −2.27 (−4.00 to −0.54)* | −4.50 (−7.52 to −1.48)** |
| 3-OH-CB-153 | 0.31 (−2.55 to 3.17) | −2.21 (−6.34 to 1.92) |
| 4-OH-CB-146 | −0.13 (−2.83 to 2.56) | −1.52 (−5.74 to 2.69) |
| 3′-OH-CB-138 | 0.20 (−2.60 to 3.00) | −1.97 (−6.09 to 2.15) |
| 4-OH-CB-187 | 0.17 (−2.52 to 3.07) | −1.61 (−5.99 to 2.76) |
| 4′-OH-CB-172 | 0.52 (−2.07 to 3.11) | −1.21 (−4.82 to 2.40) |
| Sum of six OH-PCBs | −0.11 (−2.94 to 2.71) | −2.29 (−6.75 to 2.16) |
Regression parameter coefficients represent one score change in PDI and MDI for a one-unit change in loge exposure concentration (ng/g wet weight).
a
After adjusting for district, HOME, sex, Raven score from multiple linear regression models.
*
p < 0.05;
**
p < 0.01.