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. 2018 Feb 22;2018(2):MR000013. doi: 10.1002/14651858.MR000013.pub6

Summary of findings 5. Participant information leaflet (PIL) developed with feedback from users vs usual PIL.

Participant information leaflet (PIL) developed with feedback from users vs usual PIL
Patient or population: individuals eligible for a trial
 Settings: any
 Intervention: PIL developed with feedback from users
 Comparison: usual PIL
Outcomes Illustrative comparative risks* (95% CI) Relative effect
 (95% CI) No of participants
 (studies) Quality of the evidence
 (GRADE)
Effect with usual PIL Effect with PIL developed with feedback from users
Number recruited As measureda RR 1.09
 (0.96 to 1.25) 16763
 (2 studies) ⊕⊕⊕⊝
 Moderatec
5 per 100 5 per 100
(5 to 6)
Lowb
10 per 100 11 per 100
 (10 to 13)
Moderateb
30 per 100 33 per 100
 (29 to 38)
Highb
50 per 100 55 per 100
 (48 to 63)
*The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The effect with a PIL developed with feedback from users (and its 95% confidence interval) is based on the assumed risk in the comparison group (usual PIL) and the relative effect of the intervention (and its 95% CI).
 CI: confidence interval; RR: risk ratio.
GRADE Working Group grades of evidence
 High quality: further research is very unlikely to change our confidence in the estimate of effect.
 Moderate quality: further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
 Low quality: further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
 Very low quality: we are very uncertain about the estimate.

aThis is the baseline recruitment measured in the studies presented in the 'Summary of findings' table.
 bWe selected the low, moderate and high illustrative recruitment levels of 10%, 30% and 50% based on our prior experience with trial recruitment.
 cWe downgraded evidence by 1 level because of indirectness: Chen 2011 actually measures entry to pre‐randomisation phase, not recruitment.