Table 4.
Results of explanatory multivariate analysis: SI (log) models (I)
|
SI (log) model |
Main exposure variable |
|||||||
|---|---|---|---|---|---|---|---|---|
| DLCs (pg TCDD-EQ/L) | DL-PCB 105 (μg/L) | DL-PCB 118 (μg/L) | DL-PCB 156 (μg/L) | |||||
|
N |
245 |
|
246 |
|
244 |
|
203 |
|
|
R2 (Adjusted R2) |
0.3935 (0.3675) |
|
0.3631 (0.3471) |
|
0.3932 (0.3725) |
|
0.3766 (0.3475) |
|
| |
Regression coefficient (SE)(a) |
p-value |
Regression coefficient (SE)(a) |
p-value |
Regression coefficient (SE)(a) |
p-value |
Regression coefficient (SE)(a) |
p-value |
|
Variables |
DLCs |
0.3806 |
DL-PCB 105 |
0.0414 |
DL-PCB 118 |
0.0483 |
DL-PCB 156 |
0.1379 |
| |
0.07 (0.08) |
|
−219.24 (106.90) |
|
−37.84 (19.07) |
|
−69.81 (46.87) |
|
| Age (years) |
−13.87 (2.58) |
<0.0001 |
−12.74 (1.49) |
<0.0001 |
−12.55 (1.57) |
<0.0001 |
−12.21 (1.76) |
<0.0001 |
| Weight (kg) |
0.11 (0.75) |
0.8815 |
NR |
|
NR |
|
NR |
|
| Height (cm) |
−2.09 (2.36) |
0.3762 |
−0.75 (2.18) |
0.7321 |
−2.38 (2.23) |
0.2860 |
−2.60 (2.50) |
0.2994 |
| Number of children |
NR |
|
6.22 (5.09) |
0.2232 |
4.71 (5.00) |
0.3477 |
25.2 (5.17) |
0.6264 |
| Omega-3 PUFAs (%) |
18.36 (9.89) |
0.0646 |
NR |
|
23.90 (9.94) |
0.0170 |
17.64 (11.36) |
0.1221 |
| Vitamin D (nmol/L) |
0.57 (0.72) |
0.4298 |
NR |
|
NR |
|
NR |
|
| Mercury (nmol/L) |
NR |
|
0.22 (0.25) |
0.3769 |
NR |
|
0.31 (0.31) |
0.3215 |
| Glucose (mmol/L) |
NR |
|
NR |
|
2.88 (4.18) |
0.4914 |
NR |
|
| Menopausal status |
−26.05 (40.99) |
0.5256 |
NR |
|
NR |
|
NR |
|
| Level of education |
95.19 (31.70) |
0.0030 |
NR |
|
71.25 (31.37) |
0.0240 |
72.72 (34.94) |
0.0388 |
| Smoking status |
−36.58 (27.40) |
0.1831 |
NR |
|
NR |
|
NR |
|
| Supplements use(b) |
NR |
|
NR |
|
NR |
|
−12.67 (43.91) |
0.7733 |
| Total lipid(c) (g/L) | −5.28 (9.51) | 0.5796 | 7.31 (10.41) | 0.4829 | 3.04 (10.38) | 0.7696 | 7.19 (11.28) | 0.5244 |
a Regression coefficients and standard errors values are multiplied by 103;
b Calcium and vitamin D supplements;
c Final adjustment for the total plasma lipid concentration;
NR – Variable not retained in the model (non-confounding factor; proportional change of the regression coefficient of the main exposure variable < 10%).