Non-infected | Infected | p value | |
---|---|---|---|
All patients (n = 191)a | 145 | 46 | |
Age, median (IQR) | 84 (80–87) | 85 (81–91) | 0.38 |
Gender (female), n (%) | 102 (70) | 28 (61) | 0.28 |
Residence | |||
Nursing homeb Assisted-living care homes | 55 (61) 89 (89) | 35 (38.9) 11 (11) | < 0.001 |
Diabetes | 31 (21.4) | 13 (28.3) | 0.32 |
Hypertension | 98 (67.6) | 31 (67.4) | 1 |
Obesity | 6 (4.1) | 5 (10.9) | 0.14 |
Cancer | 17 (11.7) | 6 (13.3) | 0.8 |
Lung disease | 16 (11) | 7 (15.2) | 0.4 |
Ischemic heart disease | 59 (40.7) | 20 (43.5) | 0.8 |
Number of comorbidities (mean ± SD) | 2 ± 1.3 | 2.3 ± 1.3 | 0.1 |
Number of vaccines | |||
1 2 3 | 2 (1.3) 14 (10) 129 (89) | 0 7 (15.2) 38 (85) | 1 0.3 0.4 |
Past infection (recovered) | 22 (15) | 7 (15) | 1 |
2nd antibody titer level (Geometric mean, 95% CI, Au/ml) | 4468 (3629–5503) | 2030 (1323–3115) | < 0.001 |