Table 2 Results by allocation group
From: Recruiting to Clinical Trials on the Telephone – a randomized controlled trial
Telephone group (n = 59) | Control group (n = 59) | Mean difference | P value | |
|---|---|---|---|---|
Primary outcome | ||||
Scores, first questionnaire – mean (IQR) | ||||
Total score (7–69) | 61.40 (58 to 65) | 64.42 (63 to 67) | −3.02 | <0.001 |
Comprehension score (0–20) | 16.90 (16 to 19) | 17.31 (16 to 18) | −0.41 | 0.24 |
Satisfaction score (7–49) | 44.51 (42 to 48) | 47.12 (46 to 49) | −2.61 | <0.001 |
Secondary outcomes | ||||
Scores, second questionnaire – mean (IQR) | ||||
Total score (7–69) | 61.61 (58 to 66) | 63.85 (61 to 68) | −2.24 | 0.024 |
Comprehension score (0–20) | 16.83 (16 to 18) | 17.31 (16 to 19) | −0.48 | 0.28 |
Satisfaction score (7–49) | 44.78 (41 to 49) | 46.54 (45 to 49) | −1.76 | 0.018 |
Length of interview – mean (IQR), min | 8.9 (6 to 10.5) | 12.1 (9 to 14) | −3.2 | <0.001 |
χ 2 | P value | |||
Accompanied by family member or friend at the information interview – number (%) | 7 (11.9) | 16 (27.1) | 4.37 | 0.036 |
Sought more information after being informed – number (%) | 29 (49.2) | 23 (39.0) | 1.24 | 0.27 |
Participating in The Danish Calmette Study – number (%) | 50 (84.7) | 54 (91.5) | 1.42 | 0.49 |
Adherence to The Danish Calmette Study – number (%) | ||||
Participating in 3-month follow-up | 50 (84.7) | 54 (91.5) | 1.30 | 0.26 |
Participating in 13-month follow-up | 48 (81.4) | 54 (91.5) | 2.60 | 0.11 |