3 Systematic review of treatment efficacy of PFPT 63 Attrition bias (dropout) was high in three studies.35,47,50 Risk of reporting bias was high due to insufficient information about the exact treatment protocol in two studies,35,50 and high due to insufficient information about interpretation of the results.52 Eight of the 10 studies described their treatment protocols in detail.44-49,51,52 Sample-size calculation was reported in the 4 RCTs.46,48,51,52 Other risks of bias concerned loss of funding or insurance to complete the study. We considered six studies to be of low quality, with only zero to two low bias risks.35,44,45,47,49,50 The other four studies were of medium quality.46,48,51,52 Figure 1. PRISMA flowchart
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