Table 3.
Univariate logistic regression analysis of the erythropoietin resistance index among all studied patients.
| Parameter | β | OR | 95% CI | p | |
|---|---|---|---|---|---|
| Lower | Upper | ||||
| Age (years) | −0.01 | 0.99 | 0.949 | 1.034 | 0.66 |
| Weight (kg) | −0.022 | 0.979 | 0.954 | 1.004 | 0.1 |
| BMI (kg/m2) | −0.037 | 0.964 | 0.88 | 1.055 | 0.425 |
| Hemodialysis vintage (months) | 0.117 | 1.124 | 0.979 | 1.291 | 0.097 |
| IDWG (kg) | −2.074 | 0.126 | 0.043 | 0.371 | ≤0.001∗∗ |
| ALT (U/L) | −0.053 | 0.949 | 0.856 | 1.052 | 0.316 |
| Serum albumin (g/dL) | −3.397 | 0.033 | 0.003 | 0.348 | 0.004∗∗ |
| eGFR (ml/min/1.73 m2) | 0.019 | 1.019 | 0.704 | 1.475 | 0.92 |
| Urea reduction ratio (%) | 0.026 | 1.027 | 0.98 | 1.075 | 0.262 |
| Serum uric acid (mg/dL) | 0.341 | 1.407 | 0.884 | 2.24 | 0.15 |
| Hemoglobin (g/dL) | −0.42 | 0.657 | 0.473 | 0.914 | 0.013∗ |
| White blood cells (×103/mm3) | 0.234 | 1.263 | 0.884 | 1.805 | 0.199 |
| Neutrophil (×103/mm3) | 0.429 | 1.535 | 0.934 | 2.524 | 0.091 |
| Lymphocyte (×103/mm3) | −0.02 | 0.98 | 0.329 | 2.917 | 0.971 |
| Platelets (×103/mm3) | 0.002 | 1.002 | 0.992 | 1.012 | 0.742 |
| NLR (%) | 0.709 | 2.031 | 1.189 | 3.47 | 0.01∗ |
| PLR (%) | 0.005 | 1.005 | 0.998 | 1.013 | 0.184 |
| Serum cholesterol (mg/dL) | 0.015 | 1.015 | 0.998 | 1.032 | 0.086 |
| Serum triglycerides (mg/dL) | −0.001 | 0.999 | 0.991 | 1.007 | 0.814 |
| Low-density lipoprotein (mg/dL) | 0.015 | 1.015 | 0.997 | 1.033 | 0.096 |
| High-density lipoprotein (mg/dL) | 0.03 | 1.03 | 0.969 | 1.095 | 0.339 |
| Serum calcium (mg/dL) | 0.005 | 1.005 | 0.516 | 1.958 | 0.989 |
| Serum phosphorus (mg/dL) | −0.237 | 0.789 | 0.533 | 1.168 | 0.237 |
| iPTH (pg/dL) | 0.000 | 1 | 1.000 | 1.001 | 0.641 |
| Serum iron (μg/dL) | −0.048 | 0.953 | 0.919 | 0.988 | 0.01∗ |
| Transferrin saturation (%) | −0.026 | 0.974 | 0.928 | 1.023 | 0.291 |
| Ferritin (ng/mL) | 0.001 | 1.001 | 1 | 1.002 | 0.021∗ |
| Serum folate (μg/L) | 0.032 | 1.033 | 0.942 | 1.132 | 0.494 |
| Serum vitamin B12 (pg/mL) | 0.001 | 1.001 | 0.999 | 1.002 | 0.409 |
β: regression coefficient, OR: odds ratio, CI: confidence interval, BMI: body mass index, IDWG: interdialytic weight gain, ALT: alanine transaminase, eGFR: estimated glomerular filtration rate, NLR: neutrophil-to-lymphocyte ratio, PLR: platelet-to-lymphocyte ratio, and iPTH: intact parathyroid hormone.