3.4.4.2. Constraint
For group members who had an effective size of ≥1.000, nine (40.9%) from the control group and 16 (30.8%) from the intervention group showed constraint values of 1.000, which demonstrated that they were strictly constrained by the associated group members, showed the largest constraint or dependence, and that their ability to cross-jump structural holes was very weak. For the other group members, the constraint values were < 1.000, which demonstrated that they were strictly constrained by the associated group members, had smaller constraint or dependence, and very strong ability to cross-jump structural holes.Compared to the control group, the intervention group showed a closer association.Considering aforementioned indicators comprehensively, in-degree centrality was associated with out-degree centrality in intervention group and control group (rs = 0.939, Above all, high education level parents may serve as community childcare doctors' assistant to provide service or response to other parents. In community parental health education intervention, community health workers can inspire parents' motivation to study child-unintentional-injuries-related information and participate in community health management by implementing health education on high education level parents in the community social network. Additionally, from the perspective of childcare, community health workers should focus on parents who have much more time to accompany with their child and can calculate a certain experience about childcare.