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| Baseline | Post-NACRT | Mean difference | P | |
| mean (SD) | mean (SD) | (95% CI) | ||
| BMI (kg.m−2) | 26.8 (3.9) | 26.3 (3.2) | −0.5 (−0.5, 1.6) | 0.291 |
| FEV1 (l) | 3.0 (0.7) | 2.9 (0.8) | −0.1 (−0.1, 0.4) | 0.153 |
| FVC (l) | 4.3 (0.8) | 4.2 (0.9) | −0.2 (−0.1, 0.4) | 0.188 |
| FEV1/FVC (%) | 72 (7.3) | 73 (7.3) | 1.2 (−3.1, 0.8) | 0.215 |
| Haemoglobin (g.dl−1) | 13.2 (1.5) | 12.9 (1.5) | −0.4 (0.5, 0.7) | 0.034 |
