| Baseline | Post-treatment (6 months post baseline) | 12 months post baseline | ||||||
| Control(n = 42) | PM(n = 38) | Control(n = 41) | PM(n = 32) | p Value* | Control(n = 37) | PM(n = 30) | p Value* | |
| VC (l) | 3.6 (1.0) | 3.4 (1.0) | 3.6 (1.0) | 3.6 (0.9) | 0.687 | 3.6 (1.0) | 3.6 (0.8) | 0.804 |
| FEV1 (l) | 2.8 (0.9) | 2.7 (0.9) | 2.8 (0.9) | 2.9 (0.8) | 0.974 | 2.7 (0.8) | 2.8 (0.7) | 0.583 |
| FVC (l) | 3.5 (1.0) | 3.4 (1.1) | 3.5 (0.9) | 3.6 (0.9) | 0.151 | 3.4 (0.9) | 3.6 (0.9) | 0.345 |
| PEF (l/s) | 413.4 (130.1) | 408.5 (141.7) | 425.9 (120.0) | 439.5 (113.2) | 0.745 | 407.9 (119.4) | 439.3 (109.1) | 0.375 |
Values presented as mean (SD).
SGRQ, St George’s Respiratory Questionnaire scores: range 0–100 (best–worst); VC, vital capacity; FEV1, forced expiratory flow in 1s; FVC, forced vital capacity; PEF, peak expiratory flow.
*From analysis of covariance comparing PM and control groups controlling for baseline scores.