Findings

What do systematic reviews say?

1 questions · 1 findings · 1 reviews

No studies found 0 · 0%GRADE not reported 0 · 0%Very low 0 · 0%Low 1 · 100%Moderate 0 · 0%High 0 · 0%

Retention [ · trial participants being followed up for data collection

Non‐monetary incentives: addition of pen showed no clear difference in retention [ compared with usual follow‐up (low certainty).

1 finding from 1 review

Strategies to improve retention in randomised trials 2021 · Cochrane Headline outcomes only
RR 1.02 [1, 1.05]
5 studies · 13013 participants
Low