TABLE 2.
Factors associated with log-transformed anti-S1-RBD IgG titers in HD Patients.
| Variable | Univariate |
Multivariate |
||||||
| B coefficient | 95% CI | p-value | B coefficient | 95% CI | p-value | |||
| Age (per year) | −0.02 | −0.03 | −0.01 | 0.004 | −0.015 | −0.025 | −0.004 | 0.006 |
| Female | −0.04 | −0.32 | 0.23 | 0.768 | – | – | – | – |
| Dialysis vintage (per month) | 0.00 | 0.00 | 0.00 | 0.983 | – | – | – | – |
| DM | 0.00 | −0.26 | 0.26 | 0.975 | – | – | – | – |
| IHD | −0.08 | −0.33 | 0.18 | 0.548 | – | – | – | – |
| Malignancy Hx | −0.28 | −0.59 | 0.02 | 0.066 | – | – | – | – |
| Transplantation Hx | −0.29 | −0.95 | 0.37 | 0.391 | – | – | – | – |
| Dialysis access (jugular catheter vs. AVF) | −0.06 | −0.31 | 0.20 | 0.664 | – | – | – | – |
| KT/V | 0.27 | −0.20 | 0.75 | 0.259 | – | – | – | – |
| nPCR | 0.42 | −0.05 | 0.89 | 0.077 | – | – | – | – |
| Residual renal function | 0.14 | −0.11 | 0.39 | 0.277 | – | – | – | – |
| BMI (per kg/m2) | −0.01 | −0.04 | 0.01 | 0.403 | – | – | – | – |
| BMI > 30 | −0.18 | −0.46 | 0.11 | 0.222 | – | – | – | – |
| Hemoglobin (per gr/dL) | −0.03 | −0.14 | 0.08 | 0.609 | – | – | – | – |
| Serum albumin (per gr/dL) | 0.46 | 0.09 | 0.83 | 0.015 | – | – | – | – |
| Hypoalbuminemia (Alb < 3.5) | −0.52 | −0.92 | −0.11 | 0.012 | −0.459 | −0.851 | −0.067 | 0.022 |
| Time since second vaccine dose (per day) | 0.00 | −0.01 | 0.01 | 0.001 | – | – | – | – |
| ESA dose (unit per week) | 0.00 | 0.00 | 0.00 | 0.802 | – | – | – | – |
| Iron dose (per mg/week) | 0.00 | 0.00 | 0.00 | 0.350 | – | – | – | – |
B > 0 indicates positive correlation with a log antibody titer. DM, diabetes mellitus; IHD, ischemic heart disease; BMI, body mass index; nPCR, normalized protein catabolic rate; ESA, erythropoietin stimulating agents.