Table 3 Stress, depression, anxiety, satisfaction, self-efficacy, and bonding mean scores for partners in intervention and control group over time (mean; standard deviation), and p-values for group differences at T3 and T4
|  | T0 (26–34 weeks pregnant) | T1 (34–36 weeks pregnant) | T3 (6 weeks after birth) | T4 (10 weeks after birth) | p-value T3 | p-value T4 |
|---|---|---|---|---|---|---|
Primary outcome | ||||||
Stress | ||||||
 Intervention | 25.38 (6.74) | 26.55 (6.58) | 38.82 (3.27) | 28.66 (9.66) | .61 | .59 |
 Control | 24.49 (7.08) | 25.67 (6.67) | 38.54 (4.35) | 27.36 (9.56) | ||
Secondary outcomes | ||||||
Depression | ||||||
 Intervention | 3.62 (3.20) | 2.70 (3.07) | 2.93 (2.62) | 3.21 (3.67) | .38 | .54 |
 Control | 3.93 (2.56) | 3.00 (2.29) | 3.66 (3.61) | 3.75 (3.40) | ||
Anxiety | ||||||
 Intervention | 6.24 (3.26) | 5.48 (2.86) | 5.25 (2.07) | 5.55 (3.11) | .73 | .96 |
 Control | 5.79 (2.28) | 5.86 (2.60) | 5.49 (3.02) | 5.58 (2.35) | ||
Satisfaction | ||||||
 Intervention | 36.76 (5.42) | 36.68 (6.11) | 28.61 (7.26) | 38.86 (3.29) | .78 | .58 |
 Control | 37.67 (3.22) | 37.72 (3.48) | 27.60 (7.99) | 38.36 (3.48) | ||
Self-efficacy | ||||||
 Intervention | 4.11 (.65) | 4.22 (.62) | 4.11 (.57) | 4.00 (.71) | .27 | .60 |
 Control | 4.02 (.56) | 4.22 (.59) | 3.94 (.59) | 3.92 (.55) | ||
Sleep quality | ||||||
 Intervention | n/a | n/a | 2.75 (.59) | 2.93 (.66) | .22 | .18 |
 Control | n/a | n/a | 2.54 (.70) | 2.69 (.71) | ||
Sleep quantity | ||||||
 Intervention | n/a | n/a | 2.64 (.68) | 2.86 (.85) | .39 | .42 |
 Control | n/a | n/a | 2.49 (.74) | 2.69 (.75) | ||
Parent-infant bonding | ||||||
 Intervention | n/a | n/a | n/a | 64.46 (6.42) | n/a | .73 |
 Control | n/a | n/a | n/a | 63.78 (6.73) | ||