Findings

What do systematic reviews say?

4 questions · 4 findings · 1 reviews

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No studies found 0 · 0%GRADE not reported 0 · 0%Very low 2 · 50%Low 2 · 50%Moderate 0 · 0%High 0 · 0%

Monetary incentives vs addition of a monetary reward

Retention [ · trial participants being followed up for data collection

It is very uncertain whether monetary incentives: addition of monetary incentives changes retention [ compared with addition of a monetary reward (very low certainty).

1 finding from 1 review

Strategies to improve retention in randomised trials 2021 · Cochrane Headline outcomes only
RR 1 [0.91, 1.09]
4 studies · 3765 participants
Very low

Non‐monetary incentives: addition of pen vs usual follow‐up

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

Monetary incentives: addition of monetary reward vs usual follow‐up

Retention [ · trial participants being followed up for data collection

It is very uncertain whether monetary incentives: addition of monetary reward changes retention [ compared with usual follow‐up (very low certainty).

1 finding from 1 review

Strategies to improve retention in randomised trials 2021 · Cochrane Headline outcomes only
RR 1.02 [0.96, 1.09]
3 studies · 1159 participants
Very low

Monetary incentives vs usual follow‐up

Retention [ · trial participants being followed up for data collection

Monetary incentives: addition of monetary incentives may leads to higher 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 1.2 [1.06, 1.36]
3 studies · 3166 participants
Low