Table 2.
Characteristics of COVID-19 patients by COVID-19 vaccination status.
| Characteristic | No vaccination N = 580 | Partial vaccination N = 172 | Full vaccination N = 386 | P-value |
|---|---|---|---|---|
| Mean age, years (SD) | 64.0 (17.7) | 69.8 (16.2) | 69.2 (17.2) | <0.001 |
| Gender | 0.04 | |||
| Male | 298 (51.4) | 99 (57.6) | 229 (59.3) | |
| Female | 282 (48.6) | 73 (42.4) | 157 (40.7) | |
| At least one comorbidity | 384 (66.2) | 140 (81.4) | 303 (78.5) | <0.001 |
| Number of comorbidities | <0.001 | |||
| One | 195 (33.6) | 48 (27.9) | 112 (29.0) | |
| Two | 137 (23.6) | 64 (37.2) | 117 (30.3) | |
| Three or more | 51 (8.8) | 28 (16.3) | 74 (19.2) | |
| Influenza vaccination | 249 (42.9) | 114 (66.3) | 266 (68.9) | <0.001 |
| Mean duration from last vaccine dose to diagnosis, days (SD) | – | 170.3 (114.3) | 110.5 (51.0) | <0.001 |
| Mean duration from diagnosis to admission, days (SD) | 2.6 (4.4) | 2.4 (4.3) | 2.1 (5.1) | 0.02 |
| Mean duration of hospitalization, days (SD) | 10.9 (9.4) | 10.2 (8.7) | 9.0 (9.6) | <0.001 |
| Admission to ICU | 50 (8.6) | 8 (4.7) | 19 (4.4) | 0.019 |
| Mean duration in ICU, days (SD) | 17.4 (14.8) | 20.0 (17.6) | 19.3 (14.5) | 0.01 |
| Invasive mechanical ventilation | 44 (7.6) | 7 (4.1) | 13 (3.4) | 0.015 |
| Mean duration of mechanical ventilation, days (SD) | 14.7 (13.9) | 20.4 (20.7) | 15.5 (16.5) | 0.03 |
| Death | 95 (16.4) | 28 (16.3) | 49 (12.7) | 0.264 |
| Any adverse outcome | 119 (20.5) | 30 (17.4) | 56 (14.5) | 0.057 |
| Healthcare-associated infection | 46 (7.9) | 16 (9.3) | 30 (7.8) | 0.814 |
| Mean duration of absence from work, days (SD)* | 20.1 (13.0) | 12.3 (6.5) | 17.3 (14.9) | 0.03 |
COVID-19: coronavirus 2019; SD: standard deviation; ICU: intensive care unit.
*
concerns 406 employed patients.