Table 6.
Results of logistic regression analysis
| Model for Probability of abnormal TSH | ||||
|---|---|---|---|---|
| Regression coefficient | SEM of Rc | p value | Odds ratio (for unit change) | |
| Intercept | 1.376 | 6.566 | 0.834 | 3.960 |
| Age (years) | −0.093 | 0.067 | 0.171 | 0.911 |
| Body mass index (kg/m2) | 0.024 | 0.141 | 0.863 | 1.025 |
| Glucose (mg/dl) | −0.035 | 0.033 | 0.292 | 0.965 |
| Total bilirubin (mg/dl) | 1.496 | 5.038 | 0.025 | 4.101 |
| Alanine aminotransferase (U/l) | 0.042 | 0.044 | 0.343 | 1.043 |
| Aspartate aminotransferase (U/l) | 0.002 | 0.069 | 0.977 | 1.002 |
| Creatinine (mg/dl) | 0.173 | 4.425 | 0.969 | 1.189 |
| Uric acid (mg/dl) | 0.566 | 0.639 | 0.378 | 1.761 |
| Total cholesterol (mg/dl) | 0.010 | 0.017 | 0.571 | 1.010 |
| High density lipoprotein (mg/dl) | −0.009 | 0.076 | 0.910 | 0.991 |
| Triglycerides (mg/dl) | −0.001 | 0.003 | 0.844 | 0.999 |
| Cd-B (μg/l) | 1.262 | 0.562 | 0.027 | 1.532 |
| As-U (μg/g crea) | −0.022 | 0.046 | 0.626 | 0.978 |
| Pb-B (μg/l) | 0.004 | 0.006 | 0.473 | 1.004 |
| ZnPP (μg/dl) | −0.063 | 0.052 | 0.231 | 0.939 |
As-U concentration of arsenic in urine, Cd-B concentration of cadmium in blood, Pb-B concentration of lead in blood, SEM of Rc standard error of the regression coefficient, TSH thyrotropic hormone, ZnPP concentration of zinc protoporphyrin in blood