Table 3.
Effects of covariates on antibody titers after the first and the second dose of mRNA-1273 SARS-CoV-2 vaccine (univariate analysis).
| After 1st dose | After 2nd dose | |||||
|---|---|---|---|---|---|---|
| β-coefficient | t value | p value | β-coefficient | t value | p value | |
| Titer after 1st dose | NA | NA | NA | 0.44 | 4.97 | 1.53 x 10-5 |
| Age | -0.05 | -1.37 | 0.18 | -0.03 | -1.72 | 0.09 |
| Gender | -1.48 | -1.92 | 0.06 | -0.80 | -1.54 | 0.13 |
| IS | 0.74 | 0.57 | 0.57 | -0.36 | -0.39 | 0.70 |
| Sodium | 0.17 | 1.43 | 0.16 | 0.09 | 1.61 | 0.11 |
| Albumin | 0.12 | 1.92 | 0.36 | 0.09 | 1.16 | 0.25 |
| CRP | -0.64 | -0.92 | 0.36 | -0.29 | -0.62 | 0.53 |
| Dialysis vintage | -0.04 | -2.5 | 0.017 | -0.02 | -1.07 | 0.29 |
| BMI | 0.04 | 0.33 | 0.74 | -0.05 | -0.83 | 0.41 |
| Weely total Kt/V | 1.49 | 1.39 | 0.17 | 0.76 | 1.43 | 0.16 |
| GFR* | 0.23 | 1.78 | 0.08 | 0.08 | 1.30 | 0.20 |
| Davies Score | -0.68 | -2.12 | 0.04 | -0.33 | -2.01 | 0.051 |
Univariate analysis of the variables associated with antibody titers after the first and the second dose of mRNA-1273 vaccine using univariate quantile regression. P<0.05 was considered significant (significant associations marked in bold). IS, immunosuppression; BMI, body mass index; weekly Kt/V, clearance of urea x time/volume; *GFR, residual glomerular filtration rate (calculated as mean of renal creatinine and renal urea clearance using 24 h urine samples).