Table 4.
Means, standard deviations and range for all outcome measures for the NBO-group (n = 82) and comparison group (n = 114). For the PRFQ means, standard deviations and range is calculated per item
| Outcomes | NBO (n = 82) |
Comparison group (n = 114) |
t-value | p-value | Effect size | ||
|---|---|---|---|---|---|---|---|
| M (SD) | Range | M (SD) | Range | ||||
| Timepoint 4 | |||||||
| EDPS | 3.61 (3.12) | 0–14.00 | 3.55 (3.19) | 0–13.00 | 0.41 | .68 | .059 |
| PSI – PD | 115.91 (18.56) | 73.00–158.00 | 113.56 (21.89) | 71.46–193.00 | 0.67 | .50 | .097 |
| PRFQ | |||||||
| PM | 6.66 (0.39) | 5.17–7.12 | 6.54 (0.49) | 5.17–7.00 | 1.72 | .09 | .249 |
| CMS | 4.11 (0.88) | 1.83–6.33 | 4.03 (0.91) | 1.67–6.00 | 0.81 | .42 | .117 |
| IC | 5.88 (0.80) | 2.67–7.00 | 6.02 (0.83) | 2.67–7.00 | −0.97 | .33 | −.14 |
| MPAS | 82.26 (7.27) | 58.50–94.00 | 82.18 (7.68) | 46.40–95.00 | 0.04 | .97 | −.006 |
| MCQ | 59.19 (4.03) | 47.00–67.00 | 59.33 (5.75) | 36.00–70.00 | −0.08 | .93 | .012 |
| Timepoint 5 | |||||||
| EPDS | 3.15 (3.41) | −0.14 - 15.00 | 3.60 (3.44) | −0.82 - 14.00 | −1.23 | .22 | −.178 |
| PSI – PD | 114.04 (20.87) | 73.45–164.00 | 113.90 (23.52) | 68.92–189.00 | 0.05 | .96 | .007 |
| PSI – CD | 84.00 (12.63) | 57.00–123.00 | 86.51 (16.75) | 53.00–159.00 | − 0.41 | .68 | −.059 |
| PRFQ | |||||||
| PM | 6.66 (0.37) | 5.50–7.00 | 6.71 (0.38) | 4.67–7.09 | −0.83 | .41 | −.12 |
| CMS | 4.26 (0.97) | 1.33–6.00 | 4.36 (1.01) | 1.50–6.67 | −0.72 | .47 | −.104 |
| IC | 6.19 (0.64) | 4.00–7.00 | 6.08 (0.73) | 3.17–7.00 | 0.84 | .40 | .122 |
| MPAS | 84.21 (6.46) | 64.70–93.60 | 83.04 (7.67) | 42.30–95.41 | 0.88 | .38 | .127 |
EPDS Edinburgh Postnatal Depression Scale, PSI Parenting Stress Index, PD Parent domain, PRFQ Parental Reflective Functioning Questionnaire, PM Pre-Mentalizing, CMS Certainty about Mental States, IC Interest and Curiosity, MPAS Maternal Postnatal Attachment Scale, MCQ Maternal Confidence Questionnaire, CD Child domain