Mean (SE) clinical and functional data of COPD patients included in the study
| Normal BMI (n = 7) | Low BMI (n = 7) | Mean difference (95% CI) | |
|---|---|---|---|
| FEV1 = forced expiratory volume in 1 second; FVC = forced vital capacity; Pao2, Paco2 = arterial oxygen and carbon dioxide tensions. | |||
| *p<0.01. | |||
| Age (years) | 61 (3) | 60 (3) | 0.7 (−9.9 to 8.5) |
| Body mass index (kg/m2) | 27.5 (1) | 18.5 (1)* | 9.1 (−12.6 to −5.5) |
| Smoking history (pack years) | 56 (8) | 47 (5) | 9.4 (−30.1 to 11.3) |
| FEV1 (% reference) | 39 (2) | 28 (2)* | 10.4 (−17.3 to −3.5) |
| FEV1/FVC (%) | 44 (4) | 40 (3) | 4.4 (−14.5 to 5.6) |
| Pao2 (kPa) | 9.3 (0.4) | 9.2 (0.5) | 0.1 (−1.7 to 1.5) |
| Paco2 (kPa) | 5.7 (0.4) | 5.5 (0.3) | 0.3 (−1.3 to 0.8) |