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Table 4 Associations between features and recruitment success

From: What influences recruitment to randomised controlled trials? A review of trials funded by two UK funding agencies

Feature

Valid N

Trials with feature that recruited successfully* n (%)

Trials that didn't have feature that recruited successfully* n (%)

Odds Ratio

95%CI

p-value

Local recruitment coordinators

100

15/69 (22)

14/31 (45)

0.34

0.14, 0.84

0.017

Simple design

122

35/116 (30)

3/6 (50)

0.43

0.06, 3.41

0.374

Support from a trials unit

122

27/94 (29)

11/28 (39)

0.62

0.26, 1.50

0.289

Multidisciplinary input

113

34/104 (33)

3/9 (33)

0.97

0.19, 6.36

0.615

Pilot phase

109

18/66 (27)

11/43 (26)

1.09

0.46, 2.61

0.845

Good level of funding

89

7/24 (29)

17/65 (26)

1.16

0.41, 3.29

0.776

Drug trial

122

19/53 (36)

19/69 (28)

1.47

0.68, 3.18

0.326

Interventions only available inside the trial

112

7/18 (39)

26/94 (28)

1.66

0.58, 4.76

0.338

Consumer input

107

4/9 (44)

26/91 (29)

2.00

0.36, 10.05

0.446

Funded by the MRC

122

28/74 (38)

10/48 (21)

2.31

1.00, 5.36

0.048

Cancer trial

122

12/24 (50)

26/98 (27)

2.77

1.11, 6.93

0.026

Dedicated trial manager

107

32/91 (35)

2/16 (13)

3.80

0.79, 36.14

0.087

  1. * ≥ 100% of original target