TABLE 2.
Subgroup analysis of Internet‐based interventions for prevalence of postpartum depression according to fellow‐up, type of intervention, number of sessions and professional support
| Stratification group | N | Sample Size | RR a (95% CI) | Z‐statistics | p | Heterogeneity I 2 (%) | Chi‐square, χ 2 (df), comparison |
|---|---|---|---|---|---|---|---|
| Total | 7 | 856 | 0.642 (0.507–0.813) | 3.67 | <.001 | 59.9 | 14.96 (6) |
| Fellow‐up | |||||||
| >12W | 4 | 735 | 0.727 (0.637–0.831) | 4.69 | <.001 | 45.3 | 5.48 (3) |
| <12W | 2 | 80 | 0.488 (0.302–0.788) | 2.93 | .003 | 18.3 | 1.22 (1) |
| =12W | 1 | 41 | 0.257 (0.105–0.628) | 2.98 | .003 | / | / |
| Type of intervention | |||||||
| Cognitive behavioural therapy | 5 | 442 | 0.628 (0.435–0.906) | 2.49 | .013 | 67.0 | 12.14 (4) |
| Behavioural activation | 2 | 414 | 0.626 (0.507–0.772) | 4.37 | <.001 | 0.0 | 0.52 (1) |
| Number of sessions | |||||||
| <8 sessions | 2 | 80 | 0.418 (0.246–0.708) | 3.24 | .001 | 63.2 | 2.72 (1) |
| ≥8 sessions | 5 | 776 | 0.692 (0.554–0.865) | 3.23 | .001 | 56.7 | 9.24 (4) |
| Professional support | |||||||
| Exclusive therapist support | 6 | 817 | 0.693 (0.609–0.789) | 5.56 | <.001 | 56.3 | 11.43 (5) |
| Without therapist support | 1 | 39 | 0.367 (0.179–0.755) | 2.73 | .006 | / | / |
a
ES: Effect size represents the prevalence of depressive mood.