Table 3. Relationship between various risk factors including serum bilirubin and estimated glomerular filtration rate.
| Multiple linear regression | |||
| Pearson's correlation | Forced method | Stepwise method | |
| Characteristic | r (P-value) | β (P-value) | β (P-value) |
| Gender (male = 0, female = 1) | −0.08 (0.007) | −0.10 (<0.001) | −0.08 (<0.001) |
| Age | −0.36 (<0.001) | −0.29 (<0.001) | −0.29 (<0.001) |
| Body mass index | −0.06 (0.039) | −0.04 (0.123) | ------ |
| Smoking status | 0.05 (0.108) | −0.03 (0.272) | ------ |
| Systolic blood pressure | 0.05 (0.137) | ------ | ------ |
| Diastolic blood pressure | 0.17 (<0.001) | 0.04 (0.101) | ------ |
| antihypertensive medication | −0.18 (<0.001) | −0.07 (0.002) | −0.08 (<0.001) |
| Triglycerides | −0.18 (<0.001) | −0.06 (0.021) | −0.06 (0.010) |
| HDL cholesterol | 0.10 (0.001) | 0.00 (0.869) | ------ |
| LDL cholesterol | 0.05 (0.110) | 0.03 (0.327) | ------ |
| Antidyslipidemic medication | 0.00 (0.921) | −0.02 (0.434) | ------ |
| Fasting blood glucose | −0.04 (0.171) | −0.02 (0.471) | ------ |
| Antidiabetic medication | −0.06 (0.058) | −0.07 (0.010) | −0.08 (0.001) |
| Serum uric acid | −0.58 (<0.001) | −0.52 (<0.001) | −0.53 (<0.001) |
| Serum bilirubin | 0.18 (<0.001) | 0.11 (<0.001) | 0.11 (<0.001) |
| R2 | ------ | 0.47 (<0.001) | 0.47 (<0.001) |
r, Pearson's correlation coefficient; β, standardized coefficient; R2, multiple coefficient of determination. Data for triglycerides, fasting plasma glucose, and serum bilirubin were skewed and log-transformed for analysis.