Table 2.
Baseline characteristics for all patients and subgroup with confirmed diagnosis of chronic obstructive pulmonary disease (COPD). Values are mean (SD) unless stated otherwise
| Characteristic | Control (high flow oxygen) | Active (titrated oxygen) |
|---|---|---|
| All patients (n=405) | ||
| No (%) male | 114/226 (50) | 83/179 (46) |
| Age (years) | 69 (10.9) (n=202) | 69 (11.8) (n=152) |
| Prehospital treatment time (minutes) | 47 (19) (n=156) | 47 (18) (n=144) |
| Pretreatment oxygen saturation (%) | 86 (13.6) (n=189) | 88 (9.8) (n=160) |
| Confirmed diagnosis of COPD (n=214) | ||
| No (%) male | 57/117 (49) | 45/97 (46) |
| Age (years) | 68.0 (10.2) (n=117) | 67.9 (10.3) (n=97) |
| Per cent predicted FEV1 | 42.1 (16.4) (n=117) | 43.3 (16.5) (n=97) |
| Smoking history (pack years) | 45.5 (26.0) (n=87) | 46.3 (22.1) (n=83) |
| Prehospital treatment time (minutes) | 47 (17) (n=87) | 50 (19) (n=80) |
| Pretreatment oxygen saturation (%) | 84 (14) (n=101) | 87 (10) (n=87) |
FEV1=forced expiratory volume in one second.