3.4.2.1. Point centrality
In the control group, the community childcare doctor had the largest in-degree centrality, 16, and out-degree centrality, 13, which was ~ three times that of the other parents. In addition, all group members had approximately the same in-degree and out-degree centrality values, which demonstrated that the parents mainly communicated only with the doctor (In the intervention group, the overall situation was similar to the control group. However, parent 1196, parent 1004, parent 1218, and parent 1109 showed greater out-degree centrality than in-degree centrality, which demonstrated that they were willing to help other parents in regard to answering their questions. Meanwhile, parent 1056, parent 1058, and parent 1080, showed greater in-degree centrality than out-degree centrality, which demonstrated that they frequently received help from other parents (