Results of the present study showed that behavioral predisposing factors such as knowledge, attitude, perceived benefits, perceived barriers, perceived self-efficacy, etc. play an important role in self-management behavior. Based on the findings of this study, the benefits of SMB, including reduced pain, enhanced functionality and efficacy in performing the activities of daily living, reduced health costs, prevention from joint damage, and well-being, encourage patients with RA to practice SMB. These findings are in line with the findings of the study by Niedermann et al. (
18), who found physical and mental health as subcategories of perceived benefits of joint protection in patients with RA. Patients acknowledged that controlling stress, regular physical activity, swimming, and social interactions lead to mental health, which in turn affects their level of success in controlling the disease. These studies have shown the role of physical activity on enhancing the quality of life of RA patients (
24,
25).
All participants agreed that perceived barriers had a significant effect on their SMB. In our study, inadequate knowledge of the nature of the disease and its treatment, reluctance and negative attitude towards SMB, joint pain, financial cost, and time limitations were the main barriers against SMB. These findings are similar to what was reported by Meyfroidt who studied patients with limited knowledge about their disease (
26). In the present study, some participants considered reluctance and/or negative attitude towards use of medications, diet, exercise, and social interactions as predisposing factors for failing to adopt SMB. In studies by Dixon and Bansback (
27), Lempp et al. (
28), patients had negative attitudes towards medications and their side-effects. Furthermore, in this study, some of the female participants expressed negative attitudes towards using canes or neck orthotics and supports due to the fact that their devices were not accepted by their partner and perceived as a sign of disability.
In the present study, participants pointed out that financial problem affects SMB. Three participants complained about the high cost of medications (biologic) and hip joint surgeries, which are generally not covered by group or community. Preparing proper health insurance and/or offering free medical examinations and treatments can solve such problems to some extent (
29-
31). Lack of time was another barrier that most of our female participants complained about.
Based on the results of the present study, most participants had low self-efficacy in stress control, and did not use a specific method for controlling their stress level. In our study, patients who had been living with RA for 15 years or more showed a high level of self-efficacy in performing SMB. This might be due to the fact that patients gradually learned how to cope with their illness and made necessary changes to their living conditions to accommodate their current circumstances, and this in turn affected their level of compliance with SMB.
Nadrian et al. (
10), and Primdahl et al. (
32), showed that in patients with RA, self-efficacy is the strongest predictor of SMB. Benka et al. also found that self-efficacy has a positive effect in dealing with their functional and psychological problems in RA patients (
33). Exchanging experiences with others has a significant effect on a person’s self-efficacy. By participating in peer education and social networking, patients can educate themselves about their disease and reach a common understanding of the problems they face.
Our participants attributed RA to water, humidity, stress, infectious disease in childhood, ageing, and heavy workload. They also believed that living in cold and humid environments, high level of stress, and poor diet cause a sudden flare of RA symptoms. Which is consistent with Niederman et al. who reported on the patients view about the disease (
18). Our participants emphasized on the effect of diet on severity of the disease. They observed that a diet of warm nature foods alleviated joint pain while eating cold nature foods and condiments exacerbated the symptoms and increased their pain. Our participants also pointed out that using ginger reduced their pain and decreased RA disease activity score.
The physical problems reported by our participants include the side-effects of medications and damage to joints. These physical problems have been reported by RA patients in a previous study (
34). In studies by Meyfroidt et al. (
26), Dixon and Bansback (
27), long term side-effects of glucocorticoids have been reported among RA patients. Meeting with other patients increase the perceived severity of the disease and improve SMB. In our study, participants complained about the inability to perform their activities of daily living and their work places. Detrimental effects of RA on patients’ activities of daily living and functionality have also been shown in these studies (
35,
36).
Disability and functional limitations due to RA reduce patients’ participation in the society and his/her level of interactions with others. The aforementioned trigger feelings of lack of understanding and sympathy from others, social stigma and rejection, loneliness, and disappointment. Kristiansen et al. (
35), showed that the social stigma imposed on a patient by his friends and relative’s due to his inability to perform his social duties has psychological consequences and detrimental effects on patient’s quality of life and his self-efficacy. Social support from family and friends plays a significant role in eliminating such negative feelings and hence their detrimental effects. Feldthusen et al. (
37), noted the effects of RA on patients’ roles in the society and suggested that patient-centered care can bring back balance to patients’ everyday life.
Fear about the future was another motive for SMB. Many patients performed SMB to live independently and to prevent from disability and other side-effects of the disease. Dadoniene et al. (
38), also found functional disability as the most important cause of dependency in RA patients. In a review article by Zuidema et al. (
39), informational, emotional needs, and social support have been considered as RA patients’ needs.
The findings of this study are applicable only to the communities that have been studied and cannot be generalized to other populations. Nevertheless, purposefulness and sample diversity were the advantages of this study. Both males and females participated in this study. Furthermore, participants were selected from a wide age range and had diverse socioeconomic statuses. The aforementioned allows transferability and generalizability of the findings to some extent. There are a few limitations on this study, which must be determined. Firstly, the low co-operation of men in the interview also led to a smaller number of them entering the study. Secondly, inability of some participants due to visual problems and inflammation of the joints made it difficult to answer the questionnaire.
5.1. Conclusions
Results of the present study show that many factors influence SMB. Self-efficacy and perceived barriers are the most important determinants of SMB. Identifying these determinants helps policy makers choose the best strategies and interventions for changing these factors in order to facilitate patients’ adherence to SMB. Based on this result, it is recommended that in the future research, interventional research is done considering behavioral determinant of SMB.