Table 2. Mean pre-and post-group scores for all outcome measures for the completer sample and imputed dataset.
| Outcome Measure | N | Pre mean (SD) | Post mean (SD) | t | Z | d |
|---|---|---|---|---|---|---|
| BSI-18 Total | complete, n = 69 | 56.30 (10.76) | 53.71 (11.58) | 2.591* | 0.312 | |
| imputed, n = 91 | 56.70 (10.40) | 53.99 (10.12) | -2.823* | 0.313 | ||
| Depression | complete, n = 69 | 55.39 (11.09) | 53.16 (11.03) | -1.868 | ||
| imputed, n = 91 | 56.03 (10.73) | 53.55 (9.64) | 2.823* | 0.261 | ||
| Anxiety | complete, n = 69 | 56.65 (11.25) | 53.25 (12.48) | 2.473* | 0.298 | |
| imputed, n = 91 | 56.65 (10.67) | 53.66 (10.93) | -2.303* | 0.273 | ||
| Somatization | complete, n = 69 | 52.30 (10.91) | 51.51 (10.47) | -0.701 | ||
| imputed, n = 91 | 52.80 (10.95) | 51.62 (9.17) | -1.062 | |||
| Q-LES-Q-SF | complete, n = 69 | 48.81 (7.87) | 48.94 (9.25) | -0.155 | ||
| imputed, n = 91 | 47.87 (8.74) | 48.86 (8.08) | -0.674 | |||
| KPCS | complete, n = 69 | 38.81 (3.51) | 40.30 (3.06) | -3.776* | 0.455 | |
| imputed, n = 91 | 39.29 (3.49) | 39.78 (2.84) | -1.288 | |||
| ‘Tunnel’ | complete, n = 37 | 5.51 (2.82) | 8.61 (1.15) | |||
| imputed, n = 85 | 6.16 (2.68) | 8.86 (0.98) | -7.084* | 1.337 | ||
| Mothers | complete, n = 22 | 6.33 (2.58) | 8.69 (1.14) | -3.376* | 1.183 | |
| imputed, n = 64 | 6.50 (2.41) | 8.95 (0.92) | ||||
| Fathers | complete, n = 15 | 4.31 (2.81) | 8.49 (1.19) | -3.352* | 1.940 | |
| imputed, n = 21 | 5.12 (3.21) | 8.57 (1.10) |
BSI-18: Brief Symptom Inventory [36]; KPCS: Karitane Parenting Confidence Scale [40]; Q-LES-Q-SF: Quality of Life Enjoyment and Satisfaction Questionnaire–Short form [42, 43]; complete = complete case; imputed = imputed values; d = within-group Cohen’s d effect sizes; SD = Standard Deviation; t = paired-samples t-test statistic
*p < 0.05; Z = Wilcoxon signed-rank test.