Table 5.
Adjusteda regression coefficients for a change in thyroid hormones associated with an IQR increase in MEHP when also adjusted for MEHHP or MEHP% (n = 208).
| Free T4 |
Total T3 |
TSHb |
||||
|---|---|---|---|---|---|---|
| Estimate (95%CI) | p-Value | Estimate (95%CI) | p-Value | Estimate (95%CI) | p-Value | |
| MEHPb | –0.046 (–0.088 to –0.004) | 0.03 | –0.027 (–0.074 to 0.021) | 0.27 | 1.05 (0.89 to 1.25) | 0.57 |
| MEHHPb,c | 0.043 (0.002 to 0.083) | 0.04 | 0.017 (–0.028 to 0.065) | 0.44 | 0.94 (0.80 to 1.11) | 0.48 |
| MEHPb | 0.008 (–0.021 to 0.038) | 0.59 | –0.004 (–0.040 to 0.031) | 0.80 | 0.97 (0.86 to 1.10) | 0.66 |
| MEHP%b,d | –0.034 (–0.065 to –0.004) | 0.02 | –0.012 (–0.047 to 0.022) | 0.46 | 1.05 (0.93 to 1.19) | 0.41 |
a
Adjusted for age, BMI, current smoking, and time of day blood sample was collected.
b
Variable was natural log-transformed in the models.
c
Coefficient represents change in thyroid hormone associated with IQR increase in MEHHP adjusted for MEHP.
d
Coefficient represents change in thyroid hormone associated with IQR increase in MEHP% adjusted for MEHP.