Baseline characteristics of patients
| High concentration O2 (n=50) | Titrated O2 (n=53) | All (n=103) | |
| Sex, male N (%) | 27 (54) | 18 (34) | 45 (43.7) |
| Age, years | 35.0 (14.4) | 32.6 (11.1) | 33.8 (12.8) |
| Respiratory rate, breaths/min | 23.4 (6.6) | 22.7 (5.7) | 23.0 (6.1) |
| Heart rate, beats/min | 97.7 (23.4) | 100.7 (18.8) | 99.2 (21.1) |
| Spo2, % | 95.1 (3.2) | 96.4 (2.7) | 95.8 (3.0) |
| Ptco2, mm Hg | 36 (7.1) | 34.1 (5.7) | 35 (6.4) |
| Ptco2 ≥38 mm Hg | 20 (40.0) | 15 (28.3) | 35 (34.0) |
| FEV1, l/min | 1.15 (0.43) | 1.29 (0.44) | 1.22 (0.44) |
| FEV1 % predicted | 32.1 (9.9) | 36.9 (9.7) | 34.6 (10.1) |
Values for age, respiratory rate, heart rate, SpO2, Ptco2, FEV1 and FEV1 % predicted are mean (SD). Values for sex and Ptco2 ≥38 mm Hg are number of patients (percentage).
FEV1, forced expiratory volume in 1 s; Ptco2, transcutaneous partial pressure of carbon dioxide.