Table 2. Efficacy outcomes: summary scores at baseline and follow-up.
| Mean (SD) | Difference in means (95% CI) | |||||
|---|---|---|---|---|---|---|
| Measure (score range) | Study group | Baseline scorea | t1 scorea | t2 scoreb | Difference between t1 and baseline score | Difference between t2 and baseline score |
| DCS (0–100)c | PDA | 53.2 (11.5) | 32.2 (16.4) | NA | -21.0 (-26.9 to -15.0) | NA |
| No PDA | 56.7 (16.6) | 37.5 (17.0) | NA | -19.2 (-27.3 to -11.0) | NA | |
| EPDS (0–30) | PDA | 14.5 (7.1) | 12.8 (6.6) | 9.0 (4.8) | -1.7 (-4.0 to 0.61) | -4.9 (-7.9 to -1.9) |
| No PDA | 12.5 (6.2) | 10.3 (5.9) | 9.7 (5.5) | -2.2 (-4.9 to 0.47) | -2.7 (-5.2 to -0.27) | |
| STAI-state (20–25, 27–80) | PDA | 44.0 (15.2) | 44.8 (15.5) | 38.8 (13.7) | 0.74 (-3.5 to 5.0) | -4.2 (-11.8 to 3.5) |
| No PDA | 41.8 (12.8) | 38.1 (12.3) | 42.2 (12.6) | -3.7 (-9.0 to 1.6) | 0.35 (-5.6 to 6.3) | |
| Knowledge questionnaire (0–16) | PDA | 11.3 (2.2) | 12.5 (1.7) | NA | 1.2 (0.23 to 2.1) | NA |
| No PDA | 11.0 (1.5) | 12.2 (1.9) | NA | 1.1 (0.33 to 1.9) | NA |
a N for baseline and t1 (4-week follow-up) for all outcomes: PDA = 23, no PDA = 23. b N for t2 (long-term follow-up): for EPDS scores PDA = 21, no PDA = 23; for STAI scores PDA = 20, no PDA = 23.
CI = confidence intervals. DCS = decisional conflict scale. EPDS = Edinburgh postnatal depression scale. NA = not applicable. PDA = patient decision aid. STAI = state-trait anxiety inventory.