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| Methods | Randomised controlled trial. Parallel design. | |
| Participants | 70 adult participants. Mean (SD) age: CCPT: 18 years (1.3); HFCC: 22.9 years (2.0). All participants completed. | |
| Interventions | CCPT versus HFCC. | |
| Outcomes | Sputum weight (wet and dry), VC, FEV1, FEF25‐75, SpO2, RV, RV/TLC. | |
| Notes | Jadad score: 2/5. 2‐week study duration, during acute pulmonary exacerbation. | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment? | Unclear risk | Unclear |
