Table 3.
Comparison of demographic, clinical and COVID-related variables in dialysis patients infected during the 4-mont period (from November 2021 to February 2022), grouped according to the vaccination status. Continuous variables are presented as means ± standard deviation (SD) in normally distributed and as median with interquartile range (IQR) in square brackets if non-normally distributed, and nominal variables are presented as percentage and absolute numbers in brackets. Significant p-values are in bold.
| Total Dialysis Population Infected with SARS-CoV-2 in the Observation Period (n = 109) | A. Fully Vaccinated (n = 75) |
B. Partially Vaccinated (n = 24) |
C. Non Vaccinated (n = 10) |
p-Value |
|---|---|---|---|---|
| Gender (M) | 55 (73.3%) | 21 (87.5%) | 6 (60.0%) | 0.791 a |
| Age (years) | 69.4 ± 13.4 | 66.2 ± 14.4 | 49.9 ± 17.0 | 0.0003 b,§ |
| Type of dialysis | ||||
|
72 (96.0%) 3 (4.0%) |
23 (95.8%) 1 (4.2%) |
10 (100%) 0 (0%) |
/ |
| Dialysis vintage (months) | 37.8 [13.7–80.1] | 21.8 [9.4–56.9] | 19.4 [10.9–36.2] | 0.217 c |
| Necessity of hospitalization | 16 (21.3%) | 6 (25.0%) | 5 (50.0%) | 0.071 a |
a Chi-square; b One-way ANOVA; c Mann-Whitney U test. § Significant A vs. C (p = 0.0008) and B vs. C (p = 0.00101) with pairwise comparisons by Tukey’s test.