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Table 2 Primary outcome—randomised to host trial

From: Can we achieve better trial recruitment by presenting patient information through multimedia? Meta-analysis of ‘studies within a trial’ (SWATs)

Study

Standard

Multimedia

Odds ratio (95% CI)

% weight

GHT2000

64/1049 (5.9%)

57/1048 (5.4%)

0.89 (0.61 to 1.28)

27.7

GHT2000 (reminder)

41/1057 (3.9%)

35/1055 (3.3%)

0.85 (0.54 to 1.35)

18.2

PSM COPD

247/2280 (10.8%)

185/1934 (9.6%)

0.84 (0.58 to 1.22)

28.2

HI-Light

51/1136 (4.5%)

54/1094 (4.9%)

1.11 (0.60 to 2.02)

10.4

seAFOod

61/395 (15.4%)

68/333 (20.4%)

1.44 (0.88 to 2.37)

15.5

Pooled

464/5917 (7.8%)

399/5464 (7.3%)

0.96 (0.79 to 1.17)

100.0