Table 2 Measured scores and linear mixed model

Intervention Group

Baseline

11.5 (9.0, 16.2) [20]

8.5 (6.0, 9.2) [20]

17.9 (6.4) [20]

6 weeks postpartum

1.0 (0.0, 7.0) [20]

3.0 (2.0, 6.2) [20]

12.2 (6.0) [20]

6 months postpartum

2.0 (0.0, 3.5) [20]

3.0 (1.0, 5.2) [20]

12.6 (6.3) [20]

Control Group

Baseline

12.0 (7.0, 15.0) [20]

6.5 (5.0, 9.8) [20]

15.8 (8.4) [20]

6 weeks postpartum

9.5 (5.8, 12.5) [20]

3.0 (0.8, 5.0) [20]

12.2 (7.1) [20]

6 months postpartum

9.0 (6.0, 11.5) [20]

5.0 (1.0, 8.0) [20]

15.1 (6.7) [20]

Linear mixed model

HFIAS

PHQ-9

PSS-10

Baseline, all participants

10.74 (8.51, 12.86) [< 0.0001]

7.99 (6.21, 10.06) [< 0.0001]

15.85 (12.40, 19.70) [< 0.0001]

Intervention vs. Control

1.36 (−1.94, 4.61) [0.42]

0.06 (−2.45, 2.41) [0.94]

2.05 (−2.56, 6.54) [0.37]

All participants at 6 weeks postpartum (vs. baseline)

−1.93 (−4.43, 0.39) [0.11]

− 4.41 (− 6.48, − 2.56) [< 0.0001]

−3.54 (− 8.41, 1.38) [0.15]

All participants at 6 months postpartum (vs. baseline)

−1.50 (− 4.21, 1.20) [0.27]

−3.05 (− 5.75, − 0.39) [0.029]

−0.70 (− 5.36, 3.63) [0.77]

Change from baseline (Intervention vs. Control) at 6 weeks postpartum

−6.62 (− 10.14, − 3.17) [0.0008]

0.21 (−2.11, 2.68) [0.88]

− 2.21 (− 8.24, 3.75) [0.46]

Change from baseline (Intervention vs. Control) at 6 months postpartum

−8.05 (− 11.51, − 4.58) [< 0.0001]

− 1.40 (− 4.51, 1.84) [0.38]

−4.55 (− 10.00, 1.28) [0.12]