Table 4 Serological results of anti-SARS-CoV-2 antibodies stratified by frailty status
Overall | Non-frail | Pre-frail | Frail | |
|---|---|---|---|---|
n (%) | 481 (100) | 209 (43.45) | 226 (46.99) | 46 (9.56) |
Serological results (to either IgG or IgA) | ||||
Negative | 427 (88.8) | 188 (89.95) | 201 (88.94) | 38 (82.61) |
Positive | 54 (11.2) | 21 (10.05) | 25 (11.06) | 8 (17.39) |
Serological results IgG | ||||
Negative | 432 (89.81) | 191 (91.39) | 204 (90.27) | 37 (80.43) |
Positive | 42 (8.73) | 16 (7.66) | 18 (7.96) | 8 (17.39) |
Indetermined | 7 (1.46) | 2 (0.96) | 4 (1.77) | 1 (2.17) |
IgG titres (AU/ml), median (IQR) | 57.2 (29.3, 120.3) | 38.8 (16.5, 71.7) | 86.2 (40.4, 162.5) | 55.6 (37.25, 107.15) |
Serological results IgA | ||||
Negative | 439 (91.27) | 196 (93.78) | 203 (89.82) | 40 (86.96) |
Positive | 42 (8.73) | 13 (6.22) | 23 (10.18) | 6 (13.04) |
IgA titres (AU/ml), median (IQR) | 43 (20.4, 104.9) | 35.2 (20.4, 87.5) | 46.9 (17.3, 101.9) | 69.4 (20.7, 347) |