Table 3 Characteristics and outcomes of COVID-19 patients requiring invasive mechanical ventilation
Variables | Total |
|---|---|
N = 12,203 | |
Age, years, mean (SD) | 63.1 (14.8) |
Age category, years, n (%) | |
 0–4 | 65 (0.5%) |
 5–9 | 30 (0.2%) |
 10–14 | 27 (0.2%) |
 15–19 | 34 (0.3%) |
 20–24 | 53 (0.4%) |
 25–29 | 115 (0.9%) |
 30–34 | 155 (1.3%) |
 35–39 | 251 (2.1%) |
 40–44 | 433 (3.5%) |
 45–49 | 803 (6.6%) |
 50–54 | 1152 (9.4%) |
 55–59 | 1408 (11.5%) |
 60–64 | 1422 (11.7%) |
 65–69 | 1600 (13.1%) |
 70–74 | 1904 (15.6%) |
 75–79 | 1453 (11.9%) |
 80–84 | 853 (7.0%) |
 85- | 445 (3.6%) |
Male, n (%) | 9089 (74.5%) |
Body mass index, kg/m2, n (%) | Â |
  < 18.5 | 583 (4.8%) |
 18.5–24.9 | 4730 (38.8%) |
 25.0–29.9 | 3558 (29.2%) |
  ≥ 30.0 | 2084 (17.1%) |
 Missing | 1248 (10.2%) |
Outbreaks of COVID-19 | Â |
 1st (from February 2020) | 817 (6.7%) |
 2nd (from June 2020) | 895 (7.3%) |
 3rd (from November 2020) | 3077 (25.2%) |
 4th (from April 2021) | 2554 (20.9%) |
 5th (from July 2021) | 2602 (21.3%) |
 6th (from January 2022) | 1087 (8.9%) |
 7th (from July 2022) | 614 (5.0%) |
 8th (from November 2022) | 557 (4.6%) |
Extracorporeal membrane oxygenation, n (%) | 1426 (11.7%) |
Mortality, n (%) | 2706 (22.2%) |