The results showed that there was no significant difference between healthy families and families of psychiatric patients in terms of power. Consistently, the results of a study showed that there was no difference between the families of disabled and healthy individuals in terms of power (
17). Inconsistent with our study, Brazilian researchers who conducted a study on the families of psychiatric patients found that the presence of a chronic mental patient affected the hierarchy of power in the family (
10). Also, there was evidence that the family system of patients with schizophrenia was characterized by an uneven distribution of power and the existence of parent-offspring coalitions. Researchers argued that the uneven distribution of power in these families might be related to the premorbid period and was not necessarily related to the onset of the disease (
19). Further studies are needed in this area.
The results of our study showed that cohesion was significantly lower in the family of patients with MDD than in healthy families. Consistent with this study, the results of a study showed that the family had revers cohesion with the degree of depression in cancer patients (
15). The results of another study showed that depression had a predictive role in family cohesion (
20). Researchers believe that several factors contribute to family adaptation during the illness of family members, and one of the most important of these factors is family cohesion (
21). Contrary to these results, the findings of a study showed that in the actual situation, the highest cohesion was among healthy families, but in the ideal situation, the highest cohesion was observed in families with chronic patients (
22). Also, the results of a study revealed that family cohesion of children with autism was at a higher level than that of the general population. It suggests that family members of children with autism were more emotionally linked with each other. Researchers concluded that philosophy and cultural beliefs emphasize individual growth and inspire individuals to strive for getting along with others in harmony posterior to encountering difficulty, which may encourage family caregivers to deal with their problems effectively and promote family bonding (
23). For all that, families with chronic patients constantly engage their minds with patient problems. They ignore their physical and mental well-being that might result in psychiatric illness. Some families feel ashamed of having such psychiatric patients and attempt to limit their relationships with other people. In this challenging and anxious environment, family cohesion is affected, and thus, it can be concluded that families with healthy members have more cohesion than have families with ill members (
17).
The results also indicated that the structure of the families of healthy people is more balanced than that of the families of patients with psychiatric disorders. In this regard, Nuovo and Azzara showed that families with chronic patients had a high degree of unbalanced structures (
24). As far as we know, the physical and mental health of the family members depends on the family structure stability, and the presence of a psychiatric patient in the family often causes irreparable damages to the family (
10). Evidence reveals that in the families of patients with schizophrenia and depression, illness-related factors are the main sources of stressors for the family caregiver (
25). In other words, when a family has to deal with a disabled member, the family experiences severe stress due to the need for providing prolonged special care that can endanger the physical and mental health of the family members (
26).