Table 6 Results of logistic regression analysis(PCQ blood levelas an objective variable)
Explanatory variables which showed less than 0.10 level of significance when PCQ blood level (2 categories) and the factors selected by the principal components analysis were used as objective variables and explanatory variables, respectively. |
Explanatory variables | β | Standard deviation | Wald | Significance probability | Exp (B) | |
|---|---|---|---|---|---|---|
1 | 2,3,4,7,8-PeCDF blood level | 0.040 | 0.010 | 16.276 | 0.00005** | 1.041 |
2 | Tooth pigmentation | 6.737 | 2.073 | 10.564 | 0.00115** | 843.324 |
3 | Arthralgia | -3.082 | 1.138 | 7.337 | 0.00675** | 0.046 |
4 | γ-GTP (increase) | -0.065 | 0.024 | 7.132 | 0.00757** | 0.937 |
5 | Total bilirubin (decrease) | 3.282 | 1.384 | 5.626 | 0.01769** | 26.621 |
6 | Cheesy secretion from meibomian glands | -7.612 | 3.230 | 5.554 | 0.01844** | 0.000 |
7 | General fatigue | 2.983 | 1.273 | 5.497 | 0.01905** | 19.756 |
8 | Total cholesterol (increase) | 0.042 | 0.018 | 5.260 | 0.02182** | 1.043 |
9 | Pigmentation (toe nails) | -3.974 | 1.906 | 4.348 | 0.03705** | 0.019 |
10 | Gender (female) | -2.227 | 1.111 | 4.015 | 0.04509** | 0.108 |
11 | Pigmentation of the right buccal mucosa (band-like) | -7.584 | 3.846 | 3.889 | 0.04860** | 0.001 |
12 | Acneform eruptions (other sites) | 8.124 | 4.436 | 3.354 | 0.06705* | 3372.941 |
13 | Headache | -1.901 | 1.116 | 2.903 | 0.08842* | 0.149 |
Explanatory variables which showed less than 0.10 level of significance when 2,3,4,7,8-PeCDF blood level was excluded from the explanatory variables in the above analysis |
Explanatory variables | β | Standard deviation | Wald | Significance probability | Exp (B) | |
|---|---|---|---|---|---|---|
1 | Past history of pigmentation | 3.117 | 0.989 | 9.932 | 0.00162** | 22.588 |
2 | Tooth pigmentation | 3.929 | 1.260 | 9.727 | 0.00182** | 50.869 |
3 | PCB blood level | 0.437 | 0.156 | 7.842 | 0.00510** | 1.547 |
4 | Acneform eruptions (trunk) | -3.260 | 1.297 | 6.318 | 0.01195** | 0.038 |
5 | Abdominal pain | -1.779 | 0.781 | 5.184 | 0.02280** | 0.169 |
6 | Pigmentation (face) | 4.678 | 2.105 | 4.937 | 0.02629** | 107.516 |
7 | Total cholesterol (increase) | 0.021 | 0.010 | 4.310 | 0.03790** | 1.021 |
8 | Acneform eruptions (other sites) | 3.613 | 2.003 | 3.252 | 0.07132* | 37.059 |
9 | Pigmentation of the upper lip (patchy) | 3.161 | 1.830 | 2.984 | 0.08407* | 23.590 |
10 | γ-GTP (increase) | -0.021 | 0.013 | 2.721 | 0.09901* | 0.980 |