***TASK***
the task is to simplify the input abstract of a biomedical literature

***INPUT***
the input is the abstract of a biomedical literature

***OUTPUT***
the output is the simplified abstract for the input abstract of a biomedical literature

***DOCUMENTATION***

***EXAMPLES***

Input: We identified 83 publications and 29 were included, representing 15 data sets (475 participants). There was insufficient evidence to confirm or exclude any differences, between CCPT and other airway clearance techniques in terms of respiratory function measured by standard lung function tests. Studies undertaken during acute exacerbations demonstrated relatively large gains in respiratory function irrespective of airway clearance technique. Longer-term studies demonstrated smaller improvements or deterioration over time. Ten studies reported individual preferences for technique, with participants tending to favour self-administered techniques. Heterogeneity in the measurement of preference precluded these data from meta-analysis. This review was unable to demonstrate any advantage of CCPT over other airway clearance techniques in terms of respiratory function, but this may have reflected insufficient evidence rather than real equivalence between methods. There was a trend for participants to prefer self-administered airway clearance techniques. Limitations of this review included a paucity of well-designed, adequately-powered, long-term trials.
Output:

We looked for studies lasting over one week. We included fifteen studies in the review. These studies did not show any difference between chest physiotherapy and other therapies in terms of lung function. Studies of acute infections showed improved lung function irrespective of type of treatment. Longer-term studies showed smaller improvements or decline. In ten studies participants preferred techniques they administered on themselves. The review was limited by the lack of well-designed long-term trials. We did not find evidence that conventional chest physiotherapy techniques were any better than other treatments for lung function. We can not recommend any single treatment over another at this time.