The results showed that the mean score of parents' knowledge increased significantly after the family-centered educational model was implemented. In other words, the subjects in the intervention group achieved a better score than the control group. In this regard, Arief et al. showed that family-centered empowerment provides an opportunity for families to acquire the knowledge and skills needed to better manage their children's problems (
18). Moreover, Hakim et al. showed that the family-centered empowerment model was effective on parental care knowledge (
17), which is in concord with the results of the present study. This consistency between the results of the studies indicates the homogeneity of knowledge and practice of the mothers in the study group. Similar to previous studies, education had a significant role in increasing parental knowledge. In order to achieve change in the behavior of the parents, education should also be continuous. The results showed that the score of care knowledge in the control group increased significantly compared to the intervention group. In other words, the care knowledge in the intervention group highly increased. In this regard, some studies have shown that the implementation of the empowerment model increases care knowledge. The results of a study on the effect of the family-centered empowerment model on mothers of children with cancer showed that the implementation of the empowerment model reduces the effects of chemotherapy in children so that in this study, the average score of parental knowledge increased in the intervention group but did not differ significantly in the control group (
19). The results of another study also showed that empowering caregivers reduces the incidence of wounds caused by chemotherapy, and after the implementation of the empowerment model, there was a statistically significant difference between the groups of intervention and control (
20) which is in correlation with this study. This correlation between the results of this study and the previous studies indicates the homogeneity of the age group of children in the studies. The present study showed that the mean performance score of parents of children with leukemia increased significantly in the intervention group compared to the control group after the implementation of the family-centered educational model. In this regard, it has been shown that educating children with diabetes and their families to follow a treatment regimen through a family-centered educational program increases the awareness of children and their families (
21). The results of this study are consistent with the present study, and the two groups were similar in terms of age (2 - 12 years), which shows that the use of a family-centered empowerment program can lead to better control and care of the disease, resulting in an improvement in the family function and an increase in the quality of care. The results of the present study indicated the effectiveness of the empowerment model in improving maternal care performance. In this regard, the results of a study showed that family-centered care improves skills in children with cerebral palsy and also leads to the well-being of caregivers and their mental health (
22), which agrees with our study. Teymouri et al. showed that the implementation of a family-centered empowerment model can increase knowledge, self-worth, and self-efficacy and ultimately increase the life quality of children with asthma (
23). In explaining these results, it can be said that the intervention group gained the necessary knowledge about changing their status during the educational sessions; thus, it can be expected that at the end of the educational program, the intervention group had a significant increase in knowledge level compared to the control group. The mean score of perceived severity of parents in the intervention group increased significantly compared to the control group after the intervention. In this regard, Wacharasins showed that the implementation of a family-centered empowerment model can increase awareness and change the attitude of families of children with thalassemia. According to the results of the mentioned study, after implementing this model, there was a significant difference in the level of children's awareness in all dimensions (
24), which agrees with the results of the present study. In this study, a statistically significant difference existed between the two groups in terms of the mean score of perceived threat before and after the intervention. In other words, the results showed the effect of the educational program on the intervention group. The results obtained in this regard are consistent with the findings of Afzali et al. In their study, using the family-centered empowerment model, they were able to reduce the clinical signs of confrontational disobedience disorder in children (
25). These results can confirm that by recognizing their situation towards this disease, the people feel that if they are taught the correct behavior and if the empowerment model is properly implemented, the ground for behavior will change, especially the behaviors that have become a habit, and ultimately it leads to better disease management. We observed a statistically significant difference between the intervention and control groups after implementing the family-centered empowerment model. In other words, the implementation of the empowerment model results in the self-efficacy of the individuals in the intervention group. In this regard, Moore et al. showed that the implementation of the family-centered model in children with brain injuries improves family care and helps their families (
26), which is consistent with our results. Therefore, the health team, especially nurses, can improve the health of families by implementing a family-centered empowerment model in relevant medical institutions. One of the strengths of the results of the present study is that mothers, by gaining more knowledge about the disease, its severity, and complications due to the disease, better understand the health status of patients, and finally, they can provide the best care for their children with proper disease management. It should be noted that there were no specific restrictions for conducting this study.