| Author | HFNC | NIV | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Age | Male % | BMI, kg/m2 | APACHE Ⅱ | SOFA | P/F, mmHg | Age | male% | BMI, kg/m2 | APACHE Ⅱ | SOFA | P/F, mmHg | |
| Alharthy et al. 11 | 46 (16.4) | 86.7 | 24.3 (7.4) | MD | 9 (1.6) | 217.7 (34.4) | 46.3 (13.9) | 80 | 24.3 (7.4) | MD | 9 (1.6) | 214.7 (30.3) |
| Alkouh et al. 12 | 66.32 (12.8) | 72.2 | 27.59 (4.7) | MD | MD | MD | 64.7 (14.97) | 69 | 27.5 (4.9) | MD | MD | MD |
| Costa et al. 9 | 65.3 (17.7) | 91.3 | 29.4 (5.5) | 11.2 (8.5) | 3.7 (5.7) | MD | 74.5 (19) | 35.7 | 32.4 (4.7) | 20.7 (12.4) | 2.7 (1) | MD |
| COVID-ICU group 13 | 63.7 (12.6) | 75 | 28 (4.5) | MD | 3 (1.5) | 105 (42.3) | 64.3 (12) | 71 | 28 (4.5) | MD | 2.7 (1.5) | 127.7 (62) |
| Duan et al. 14 | 50 (14) | 52 | MD | 10 (5) | 4 (2) | 165 (48) | 65 (14) | 92 | MD | 8 (2) | 4 (1) | 196 (46) |
| Fernández et al. 15 | MD | MD | MD | MD | MD | MD | MD | MD | MD | MD | MD | MD |
| Franco et al. 16 | 65.7 (14.7) | 69.9 | MD | MD | 2.5 (0.9) | 166 (65) | 69.08 (12.6) | 69 | MD | MD | 3.5 (1.8) | 147 (82.4) |
| Gaulton et al. 17 | 61 (16) | 33.3 | 35.8 (9) | MD | MD | MD | 56 (15) | 82.3 | 34.8 (7.8) | MD | MD | MD |
| Ghani et al. 18 | MD | 68 | MD | MD | MD | MD | MD | 68 | MD | MD | MD | MD |
| Gough et al. 19 | 74 (28.7) | 51.6 | 29.6 (7.8) | MD | MD | 180.3 (150) | 61.7 (13.6) | 43.4 | 30.2 (5.3) | MD | MD | 180.5 (101.3) |
| Grieco et al. 20 | 62 (10.7) | 84 | 28.3 (3.8) | MD | 2.3 (0.8) | 102 (33.5) | 65 (11.4) | 77 | 27.7 (3) | MD | 2.3 (0.8) | 104 (32) |
| Mahroof et al. 21 | MD | MD | MD | MD | MD | MD | MD | MD | MD | MD | MD | MD |
| Menga et al. 22 | MD | MD | MD | MD | MD | MD | MD | MD | MD | MD | MD | MD |
| Nadeem et al. 23 | MD | MD | MD | MD | MD | MD | MD | MD | MD | MD | MD | MD |
| Nair et al. 24 | 56.7 (13) | 80 | MD | MD | MD | 112.1 (36) | 56.2 (13) | 64.8 | MD | MD | MD | 115.3 (42) |
| Pearson et al. 25 | 66 (12.4) | 61.3 | 32.5 (9.5) | MD | 3 (1.6) | MD | 60.7 (18.7) | 81.3 | 27.7 (4.8) | MD | 2.3 (0.8) | MD |
| Perkins et al. 26 | 57.6 (13) | 65.2 | MD | MD | MD | 138.5 (87.6) | 56.7 (12.5) | 68.4 | MD | MD | MD | 131.8 (67.8) |
| Ranieri et al. 27 | 62.7 (12.7) | 78.3 | 27.7 (4.6) | MD | 3 (1.5) | 132.7 (41.8) | 66.3 (10.5) | 75.6 | 27.6 (3.2) | MD | 2.3 (0.7) | 148.7 (42.7) |
| Rodrigues Santos et al. 28 | 67.94 (7.82) | 62.2 | MD | 9.8 (3.2) | 3 (0.9) | 191.1 (37.8) | 64.1 (9.81) | 65.4 | MD | 11 (3.2) | 2.7 (0.8) | 190.38 (42.47) |
| Shoukri 29 | 65.7 (12.2) | 68.3 | 28.2 (5.7) | MD | MD | MD | 69.6 (10.2) | 68.6 | 29.5 (6.2) | MD | MD | MD |
| Sykes et al. 30 | 71.3 (13.9) | 75 | MD | MD | MD | 77.3 (38.2) | 70.7 (10.0) | 60 | MD | MD | MD | 76.0 (34.5) |
| Wendel Garcia et al. 31 | 64 (14.3) | 75 | 28 (5.3) | 9.7 (5.3) | 5.3 (3) | 124.7 (67.8) | 65.7 (15.8) | 71 | 26.3 (3.8) | 11 (6.8) | 5.7 (2.3) | 133.3 (53.5) |
| Wendel Garcia et al. 32 | 62 (11.9) | 68 | 28.3 (3.7) | MD | MD | MD | 61.7 (12) | 68 | 28.3 (3.8) | MD | MD | MD |
APACHE, acute physiology and chronic health evaluation; BMI, body mass index; HFNC, high-flow nasal cannula; MD, missing data; NIV, noninvasive ventilation; P/F, oxygenation index (PaO2/FiO2); SOFA, sequential organ failure assessment.
Values are given as mean (standard deviation).