Table 2.
Factors correlated with microalbuminuria
| Characteristics | Univariate | Multivariate | Multivariate | |||
|---|---|---|---|---|---|---|
| β | P | β | P | β | P | |
| Past history of hypertension: n (%) | 1.031 | 0.002* | - | - | - | - |
| Smoking: n (%) | 0.614 | 0.066 | 0.682 | 0.088 | 0.453 | 0.324 |
| Diabetic retinopathy: n (%) | 1.690 | 0.036* | 1.595 | 0.083 | 0.049 | 0.965 |
| HbA1c (%) | 0.119 | 0.055 | 0.076 | 0.160 | 0.099 | 0.238 |
| Systolic BP (mm Hg) | 0.025 | < 0.001* | 0.022 | 0.015* | 0.036 | 0.001* |
| Diastolic BP (mm Hg) | 0.027 | 0.003* | 0.014 | 0.798 | -0.003 | 0.841 |
| Cortisol at 8:00 h (nmol/L) | 0.003 | 0.006* | 0.004 | 0.005* | - | - |
| Cortisol at 16:00 h (nmol/L) | 0.004 | 0.002* | - | - | 0.005 | 0.001* |
| eGFR (mL/min/1.73 m2) | -0.016 | 0.001* | -0.017 | 0.005* | -0.008 | 0.210 |
Cortisol level at 8:00 h and at 16:00 h were put in multivariate analysis separately to decrease the possible bias caused by combination enhanced effects. HbA1c, glycated hemoglobin; BP, blood pressure; eGFR, estimated glomerular filtration rate; *P-value < 0.05.