| BE -2 to -6 | BE < -6 | ||||
---|---|---|---|---|---|---|
At scene | ER | p | At scene | ER | p | |
SpO 2 , mean % (SD) | 89.5 (12.1) | 96.8 (5.1) | <0.001 | 87.9 (17.2) | 94.9 (11.8) | <0.001 |
Intubation, n (%) | 183/258 (71.3) | 242/258 (93.8) | <0.001 | 200/256 (78.1) | 246/255 (96.5) | <0.001 |
Chest tube, n (%) | 42/258 (16.3) | 133/254 (52.4) | <0.001 | 44/256 (17.2) | 134/254 (52.8) | <0.021 |