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Table 4 Associations between features and recruitment success
| 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 |
