Comparison of DPC scores between the two groups without and with PILs
| Scores | Control group without PILs | Intervention group with PILs | OR with 95% CI | P value |
| Intention-to-treat analysis | ||||
| DPC score (out of 52) | 44 (38–48) (n=156) | 46 (42–49) (n=168) | <0.01 | |
| ≤35 | 31/156 (19.9%) | 14/168 (8.3%) | <0.01 | |
| 36–50 | 109/156 (69.9%) | 123/168 (73.2%) | ||
| >50 | 16/156 (10.3%) | 31/168 (18.5%) | ||
| ≤35 | 31/156 (19.9%) | 14/168 (8.3%) | Univariate OR for good communication (score >35): 2.73 (1.39 to 5.35) | <0.01 |
| >35 | 25/156 (80.1%) | 154/168 (91.7%) | Adjusted* OR for good communication (score >35): 2.54 (1.27 to 5.06) | |
| Per-protocol analysis | ||||
| DPC score (out of 52) | 44 (38–48) (n=156) | 48 (44–50.5) (n=84) | <0.01 | |
| ≤35 | 31/156 (19.9%) | 3/84 (3.6%) | Univariate OR for good communication (score >35): 6.70 (1.98 to 22.6) | <0.01 |
| >35 | 125/156 (80.1%) | 81/84 (96.4%) | Adjusted* OR for good communication (score >35): 5.60 (1.63 to 19.2) | |
*Adjusted for age, sex, family situation and pathology.
DPC, doctor–patient communication; PILs, patient information leaflets.