Effectiveness of online psychological interventions to prevent perinatal depression in fathers and non-birthing partners: A systematic review and meta-analysis of randomized controlled trials.

Little is known about the effectiveness of online preventive interventions for paternal perinatal depression (PPD). This systematic review (SR) and meta-analysis (MA) of randomized controlled trials (RCTs) evaluated the effectiveness of online psychological interventions to prevent PPD in fathers and non-birthing partners. The PRISMA 2020 guidelines were followed. The search was conducted in eight electronic databases and other sources from inception to 12 May 2023. The pooled standardized mean difference (SMD) was computed using random-effect models. Seven RCTs were included in the SR and 6 were included in the MA, representing 1.042 fathers from five different countries. No trials focused on non-birthing partners were found. The pooled SMD was -0.258 [95 % confidence interval - 0.513 to -0.004;  < 0.047]. The heterogeneity was moderate (I2 = 51 %; 95%CI [0 % to 81 %]) and nonsignificant ( = 0.070). However, sensitivity analyses showed that the effectiveness was stable only when the fixed effect model and the Egger's g were used to estimate the pooled SMD. No publication bias was found. Only two RCTs had an overall low risk of bias assessed by using the Cochrane ROB 2.0 tool. The quality of evidence based on GRADE was very low. In conclusion, online psychological interventions may be effective for the prevention of PPD. More high-quality evidence is warranted.