Introduction : Nowadays one of the most important methods for evaluation of treatment and care is to assess the quality of life (QOL). Chronic patient like diabetics are face with many disorder in dimensions of QOL .   In this regard , the researcher wishes to survey the quality of life and its dimensions and the relational pattern between demographic characteristic and dimensions of QOL .   Method : the sample consisted of 150 patients with type 2 diabetes who referred to Sina hospital of Tabriz (the Diabetes center of Tabriz university of medical sciences ) . subjects answered 3 sets of questionnaires : (1) demographic characteristic ,(2) standard instrument of QOL related to health , (3) specific instrument of diabetes which included : physical function , pain, daily activities , feelings , sleep , relation with relatives , overall health , problems and satisfaction with treatment methods .   The data were analyzed by descriptive statistics ( mean , SD , variance ) and inferential statistics ( ANOVA , T test , linear regression ) .   Result : the results indicate that physical dimension ( 71.33 % ) and social dimension ( 78 % ) in most of the patients were undesirable ,while psychological dimension ( 80.7 % ) and specific dimension ( 84 % ) in the patients were desirable .   from the total numbers of patients , 61.33 % were female , 82 % were married , 10.7 % were graduated and 16.66 % were occupied .   the results showed that independent variables ( age , marriage ,family income , educational level and sex ) were meaningful relationship with QOL .   Conclusion : nearly half of mentioned patients were not have desirable quality of life in physical and social dimensions , it is suggested that programmers and managers should take care of bio- psycho- social support in such groups for improving quality of life in diabetic patients .

Keywords: Quality of life, Diabetes mellitus

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