Table 7.
Decision quality outcomes in the Control and Intervention groups post treatment decision (T1) and at 3-month follow-up (T2)
| Post-treatment decision (T1) | 3-month follow-up (T2) | |||||
|---|---|---|---|---|---|---|
| Control | Intervention | Control | Intervention | |||
| M (SD, n) | M (SD, n) | SMD (95% CI) | M (SD, n) | M (SD, n) | SMD (95% CI) | |
| Objective knowledge of treatment | ||||||
| Conceptual (/18) | 10.51 (3.47, 67) | 12.51 (4.01, 74) | −0.53 (−0.87, − 0.19) | 11.91 (3.2, 47) | 13.64 (3, 44) | −0.55 (− 0.98, − 0.13) |
| Numerical (/20) | 13.31 (3.29, 62) | 14.97 (3.17, 68) | − 0.52 (− 0.87, − 0.16) | 12.83 (3.78, 47) | 14.98 (2.76, 42) | −0.64 (−1.07, − 0.21) |
| Total (/38) | 24.05 (5.33, 62) | 27.79 (5.58, 68) | −0.69 (− 1.04, − 0.33) | 24.74 (5.7, 47) | 27.93 (5.53, 44) | −0.57 (− 0.99, − 0.14) |
| Attitudes towards treatment | ||||||
| Medication (/28) | 20.18 (5.73, 56) | 20.3 (4.72, 57) | −0.02 (− 0.39, 0.35) | – | – | – |
| Psychological treatment (/28) | 22.27 (4.63, 56) | 21.32 (4.85, 57) | 0.20 (− 0.17, 0.57) | – | – | – |
| ‘yes’ n (%) | ‘yes’ n (%) | OR (95% CI) | ‘yes’ n (%) | ‘yes’ n (%) | OR (95% CI) | |
| Adequate treatment knowledge | 51 (82.3%) | 64 (91.4%) | 2.30 (0.80, 6.64) | 41 (87.2%) | 41 (97.6%) | 6.00 (0.69, 52.07) |
| Informed choice | ||||||
| Medication | 17 (39%) | 22 (55%) | 1.94 (0.81, 4.63) | – | – | – |
| Psychological treatment | 23 (53%) | 23 (59%) | 1.31 (0.55, 3.13) | – | – | – |
|
Uptake of effective treatment options (i.e., first-line medication/s +/− adjunctive psychological therapies) |
48 (67.6) | 47 (61.0) | 0.75 (0.38, 1.48) | – | – | – |
“Adequate treatment knowledge” is defined as > 50% correct on objective knowledge of treatment items (i.e., at least 20 out of 38 marks). To have adequate knowledge, participants must either get correct: i) all conceptual knowledge items (18 marks) plus at least 2 marks on numerical knowledge items (2 marks); or ii) all numerical knowledge items (20 marks)
Empty cells (−) denote outcome was not measured at that time point
SMD standardised mean difference, OR odds ration, CI confidence interval