Table 3 Outcomes of patients with severe respiratory failure on mechanical ventilation
| Â | Unmatched groups | Propensity score-matched groups | ||||
|---|---|---|---|---|---|---|
Certified (n = 30,588) | Non-certified (n = 36,317) | Certified (n = 26,673) | Non-certified (n = 26,673) | Odds ratio (95% CI) or difference in days (95% CI) | P value | |
In-hospital mortality, n (%) | 9404 (31) | 13,668 (38) | 8317 (31) | 10,083 (38) | 0.75 (0.72 to 0.77) |  < 0.001 |
Reintubationa, n (%) | 3476 (11) | 4025 (11) | 3025 (11) | 2922 (11) | 1.04 (0.99 to 1.10) | 0.156 |
MV dependencyb, n (%) | 4227 (20) | 5791 (26) | 3790 (21) | 4090 (25) | 0.80 (0.76 to 0.84) |  < 0.001 |
MV duration, day | 9.0 (6.0–17) | 10 (6.0–20) | 9.0 (6.0–18) | 10 (6.0–19) | − 2.77 (− 3.33 to − 2.21) |  < 0.001 |
CCU length of stayc, day | 10 (6.0–14) | 8.0 (5.0–13) | 9.0 (6.0–14) | 9.0 (5.0–13) | 0.55 (0.45 to 0.66) |  < 0.001 |
ICU length of stayc, day | 9.0 (5.0–13) | 8.0 (5.0–13) | 9.0 (5.0–13) | 8.0 (5.0–13) | 0.28 (0.16 to 0.40) |  < 0.001 |
HCU length of stayc, day | 5.0 (3.0–10) | 7.0 (4.0–12) | 5.0 (3.0–10) | 8.0 (4.0–13) | − 1.63 (− 1.82 to − 1.44) |  < 0.001 |
Hospital length of stay, day | 24 (14–41) | 26 (14–47) | 24 (14–41) | 25 (14–47) | − 5.54 (− 6.3 to − 4.79) |  < 0.001 |