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. 2019 Nov 27;2019(11):CD003147. doi: 10.1002/14651858.CD003147.pub5

Comparison 1. PEP compared with PDPV.

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 Change in FEV1 (% predicted) 4   Mean Difference (IV, Fixed, 95% CI) Subtotals only
1.1 8 days to 1 month 1 10 Mean Difference (IV, Fixed, 95% CI) 0.60 [‐6.33, 7.53]
1.2 2 to 3 months 1 20 Mean Difference (IV, Fixed, 95% CI) ‐0.5 [‐3.68, 2.68]
1.3 7 to 12 months 1 36 Mean Difference (IV, Fixed, 95% CI) 8.26 [0.76, 15.76]
1.4 2 years 1 66 Mean Difference (IV, Fixed, 95% CI) ‐0.65 [‐3.25, 1.95]
2 Change in FVC (% predicted) 5   Mean Difference (IV, Fixed, 95% CI) Subtotals only
2.1 Single treatment 1 16 Mean Difference (IV, Fixed, 95% CI) 1.90 [‐4.96, 8.76]
2.2 8 days to 1 month 2 26 Mean Difference (IV, Fixed, 95% CI) ‐4.18 [‐12.92, 4.56]
2.3 > 1 to 3 months 1 20 Mean Difference (IV, Fixed, 95% CI) 2.09 [‐5.46, 9.64]
2.4 > 6 to 12 months 1 36 Mean Difference (IV, Fixed, 95% CI) 8.74 [1.44, 16.04]
2.5 > 1 to 2 years 1 66 Mean Difference (IV, Fixed, 95% CI) ‐1.57 [‐4.33, 1.19]
3 Change in FEF25‐75 (% predicted) 3   Mean Difference (IV, Fixed, 95% CI) Subtotals only
3.1 8 days to 1 month 1 10 Mean Difference (IV, Fixed, 95% CI) ‐6.2 [‐14.41, 2.01]
3.2 > 1 to 3 months 1 20 Mean Difference (IV, Fixed, 95% CI) ‐3.08 [‐7.87, 1.71]
3.3 > 6 to 12 months 1 36 Mean Difference (IV, Fixed, 95% CI) 3.56 [‐6.18, 13.30]
4 TLC 1   Mean Difference (IV, Fixed, 95% CI) Subtotals only
4.1 > 1 to 3 months 1 20 Mean Difference (IV, Fixed, 95% CI) ‐3.38 [‐13.67, 6.91]
5 Radiological imaging: increased bronchial markings 1   Risk Ratio (M‐H, Fixed, 95% CI) Subtotals only
5.1 > 6 to 12 months 1 26 Risk Ratio (M‐H, Fixed, 95% CI) 0.88 [0.69, 1.12]
6 Radiological imaging: change in Brasfield score 1   Mean Difference (IV, Fixed, 95% CI) Subtotals only
6.1 > 6 to 12 months 1 36 Mean Difference (IV, Fixed, 95% CI) 0.0 [‐1.20, 1.20]
7 Adverse events 1   Risk Ratio (M‐H, Fixed, 95% CI) Subtotals only
7.1 Gastrointestinal reflux 1 26 Risk Ratio (M‐H, Fixed, 95% CI) 1.25 [0.43, 3.63]
7.2 Gastrointestinal reflux leading to withdrawal from the study 1 26 Risk Ratio (M‐H, Fixed, 95% CI) 0.14 [0.01, 2.52]