3.4.1. Density and distance
unintentional injuries
For the control group, the density was 0.0590 and the distance-based cohesion (compactness) was 4.4%. For the intervention group, the density was 0.2912 and the distance-based cohesion (compactness) was 21.6%. Compared to the control group, the intervention group had ~ five-times the density and compactness, which demonstrated that the communication in the intervention group was closer and that more interactions occurred between parents. This indicated that the online-social-network-based parental health education intervention has a positive impact on enhancing parents' knowledge, beliefs, and skills about child unintentional injuries (see 