The effect of Wazzup Mama?! An antenatal intervention to prevent or reduce maternal distress in pregnancy

We evaluated the effect of the intervention WazzUp Mama?! on antenatal maternal distress in a non-randomized pre-post study including healthy women in 17 Dutch midwifery practices. The control group (n = 215) received antenatal care-as-usual. The experimental group (n = 218) received the intervention. Data were collected at the first and third trimester of pregnancy. Maternal distress (MD) was measured with the Edinburgh Depression Scale (EDS), State-Trait Anxiety Inventory (STAI), and Pregnancy-Related Anxiety Questionnaire (PRAQ). We used multivariate repeated-measure analysis to examine the across time changes and ANCOVA was used to examine the differences between the two groups. In the control group, mean EDS, STAI, and MD scores significantly increased from first to third trimester of pregnancy, mean PRAQ scores increased, but not significantly, the proportion of scores above cut-off level of EDS, STAI, and PRAQ significantly increased from first to third trimester, and the proportion of MD scores above cut-off level increased, but not significantly. Within the experimental group, the mean STAI, PRAQ, and MD scores significantly decreased from first to third trimester, the EDS mean scores decreased but not significantly, proportions of scores above cut-off level for PRAQ and MD significantly decreased from first to third trimester of pregnancy, the proportions of EDS and STAI scores above cut-off level decreased but not significantly. There was a moderate significant positive effect of WazzUP Mama?! on the MD scores (F(1.43) = 27.05, p < 0.001, d = 0.5). The results provide support for the effectiveness of the intervention WazzUp Mama?!