Cochrane · systematic review · MR000013
Strategies to improve recruitment to randomised trials
Treweek, S, Pitkethly, M, Cook, J, et al. · Cochrane Database of Systematic Reviews · 2018 · Cochrane Library
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
7
current version
GRADE rated
7
No studies
0
Included studies
NR
No studies 0 · 0%Ungraded 0 · 0%Very low 1 · 14.3%Low 0 · 0%Moderate 3 · 42.9%High 3 · 42.9%
Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.
Questions and results
Show all 2 versionsOpen trial versus blinded trial
Population: individuals eligible for a trial
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Number recruited Open trial vs blinded trial | RR 1.25 [1.18, 1.34] | 2 studies · 4833 participants | High |
Telephone reminder versus no telephone reminder
Population: individuals eligible for a trial
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Number recruited Telephone reminder vs no telephone reminder | RR 1.9 [1.35, 2.67] | 2 studies · 978 participants | High |
Bespoke, user‐tested participant information leaflet (PIL) vs usual PIL
Population: individuals eligible for trial
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Willingness to participate/number recruited Bespoke, user‐tested participant information leaflet (PIL) vs usual PIL | RR 1.15 [0.92, 1.44] | 3 studies · 6634 participants | High |
Brief participant information leaflet (PIL) vs usual PIL
Population: individuals eligible for a trial
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Number recruited Brief participant information leaflet (PIL) vs usual PIL | RR 1 [0.93, 1.07] | 2 studies · 4633 participants | Moderate Downgraded: indirectness |
Participant information leaflet (PIL) developed with feedback from users vs usual PIL
Population: individuals eligible for a trial
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Number recruited Participant information leaflet (PIL) developed with feedback from users vs usual PIL | RR 1.09 [0.96, 1.25] | 2 studies · 16763 participants | Moderate Downgraded: indirectness |
Providing information by video versus by standard means alone
Population: individuals eligible for trial
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Number recruited Providing information by video vs by standard means alone | RR 1.08 [0.89, 1.31] | 3 studies · 4695 participants | Very low Downgraded: risk of bias, imprecision, inconsistency |
Financial incentive vs no incentive
Population: individuals eligible for a trial
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Number recruited Financial incentive vs no incentive | RR 1.48 [0.85, 2.58] | 6 studies · 1506 participants | Moderate Downgraded: inconsistency |