Table 1 Baseline characteristics of patients with COVID-19 pneumonia treated with high-flow nasal cannula
Characteristic | N | Overall, N = 300 | Non-failure, N = 173 | Failure, N = 127 |
|---|---|---|---|---|
Age, years | 300 | 60 (51, 70) | 60 (51, 69) | 61 (50, 72) |
Male | 300 | 228 (76) | 130 (75) | 98 (77) |
Body mass index, kg/m2 | 286 | 25.2 (22.6, 29.3) | 25.0 (22.6, 28.6) | 25.7 (22.8, 31.7) |
Hypertension | 300 | 146 (49) | 83 (48) | 63 (50) |
Chronic pulmonary disease | 300 | 28 (9.3) | 11 (6.4) | 17 (13) |
Any tumor | 300 | 20 (6.7) | 8 (4.6) | 12 (9.4) |
Chronic heart failure | 300 | 13 (4.3) | 9 (5.2) | 4 (3.1) |
Diabetes | 300 | 75 (25) | 42 (24) | 33 (26) |
Dementia | 300 | 9 (3.0) | 7 (4.0) | 2 (1.6) |
Delirium | 299 | 9 (3.0) | 5 (2.9) | 4 (3.2) |
Vaccination, doses | 276 | Â | Â | Â |
 0 |  | 245 (89) | 138 (87) | 107 (91) |
 1 |  | 6 (2.2) | 4 (2.5) | 2 (1.7) |
 2 |  | 23 (8.3) | 16 (10) | 7 (6.0) |
 3 |  | 2 (0.7) | 1 (0.6) | 1 (0.9) |
SOFA score | 282 | 2 (2, 3) | 2 (2, 3) | 2.00 (2.00, 3.00) |
APACHE2 | 254 | 9 (6, 13) | 9 (6, 13) | 8 (6, 12) |
Heart rate, bpm/min | 284 | 82 (72, 92) | 80 (71, 91) | 84 (78, 99) |
Glasgow come scale | 291 | 15 (15, 15) | 15(15, 15) | 15 (15, 15) |
Body temperature, °C | 282 | 37.0 (36.6, 37.8) | 36.8 (36.5, 37.6) | 37.2 (36.7, 38.0) |
Respiratory rate, bpm/min | 278 | 25 (21, 30) | 25 (20, 30) | 25 (22, 30) |
SpO2 | 295 | 92 (90., 95.) | 93 (91, 96) | 91 (88, 93) |
FiO2 | 280 | 0.75 (0.50, 0.95) | 0.60 (0.44, 0.95) | 0.90 (0.60, 0.95) |
SpO2/FiO2 | 280 | 121 (96, 184) | 145 (100, 211) | 101 (93, 158) |
Number of days from onset to hospitalization | 300 | 7 (5, 10) | 8 (4, 10) | 6 (5, 8) |
Number of days from admission to HFNC | 300 | 0.83 (0.62, 1.65) | 0.83 (0.65, 1.56) | 0.84 (0.60, 1.78) |
Total bilirubin, mg/dL | 295 | 0.56 (0.43, 0.70) | 0.57 (0.49, 0.72) | 0.51 (0.40, 0.70) |
Blood urea nitrogen, mg/dL | 295 | 19 (14, 26) | 19 (13, 24) | 21 (15, 28) |
Creatinine, mg/dL | 294 | 0.81 (0.66, 1.07) | 0.78 (0.63, 0.95) | 0.85 (0.70, 1.15) |
Platelets, 103/µL | 295 | 169 (108, 226) | 179 (89, 246) | 160 (116, 220) |