Other studies that investigate the effect ofapplying Orem’s self-care model on the QOL ofpatients with diabetes have shown mixed resultsabout the effect of this model in the eight dimensionsof QOL. Among the causes of discrepancies in theresults of these studies and the present study, wesee the difference in sample size, the number ofpeople in each group, type, number and variety ofteaching methods to the patients, the duration oftraining sessions, post-test interval after the lastsession. Obviously, the design and development ofself-care educational program varies based onhospital facilities, conditions and available time. Inthe study of Shams et al. up to 15 people attendedeach training session, but the present study wasconducted in small groups of 5 people4. In the studyof Saieedpour et al., the implementation of threeone-hour sessions over three weeks of self careled to increased QOL of patients with diabetes inall aspects of life questionnaire. Although theduration of treatment in that study is less than thepresent study but it was effective on all aspectseven general health and emotional role thatshowed no statistically significant improvement inour study30. In a study by Ganjloo et al., Self CareModel on QOL was conducted in patients with TypeII diabetes. Results showed that the experimentalgroup in all aspects of QOL improved significantly(31). In the studies by Saieedpouret al. as well asGanjlooet al., training was performed throughpresentations, questions and answers, groupdiscussion, videos and pamphlets31,32. In the presentstudy, there were no hospital facilitiesto use thesefive teaching methods and only group educationmethod in small groups of 5 people was used andpamphlets were given at the end of trainingsessions. Other causes of inconsistency of ourresults with these two studies could be related todifferences in demographic characteristics ofsubjects in these studies.Other studies have also shown theinfluence of the use of Self Care Model on QOL inpatients with other diseases. Among them arestudies on the QOL of cancer patients undergoingchemotherapy by Karbaschi et al., the physical andmental aspects of QOL of patients with MS byMasoudi et al., all aspects of QOL for hemodialysispatients by Narouiet al., physical and mental qualityof life for patients with migraine byOmatreza et al.,and the QOL in patients with hypothyroid goiterpoint by Rahimi et al33-38.One of the goals raised in clinical nursingis helping to improve the QOL of patients.Accordingto the results of the present study that showed theimproved QOL of diabetic patients, nurses in clinicalcare can use this model and provide patients withthe necessarycare training to increase the QOL ofthese patients. Also, due to the effectiveness of thismodel of care, nursing teachers can emphasize onthis self-care model in the education of nursingstudents provide the grounds to improve the QOLof patients with diabetes.