Principal Findings of the Study
All the participants experienced the prenatal-coaching mobile app, but only the intervention group experienced the VR images. The scores measuring maternal interaction with the fetus showed a significantly greater increase in the intervention group than the control group at follow-up (0.4 vs 0.1). The proportion of participants with increased scores at the follow-up evaluation was over 3 times greater in the intervention group than the control group (43% vs 13%). The intervention group seemed to show improvement in depressive-symptom test scores at the follow-up evaluation, although the difference was not statistically significant (53% vs 38%).