Examining validity and reliability of the Iranian version of the quality of life in adult cancer survivors (QLACS) questionnaire

Background: quality of life among cancerous patients after diagnose and treatment steps is important. This study evaluated properties of Persian version of QLACS questionnaire among Iranian short-survivors of breast cancer by assessing its validity and reliabilityMethod: The QLACS was translated to Persian for this study. Face and content validity of the questionnaire was assessed by a panelist group by the impact score and content validity ratio and index methods. In the next step the questionnaire was filled by 150 women with breast cancer who diagnosed 1.5-5 years before this study. Explanatory factor analysis was done to assess factors. Reliability was evaluated using Cronbach’s alpha.Result: 37 items were selected for explanatory factor analysis that had impact score morethan 1.5, content validity ratio (CVR) more than 0.99 and a suitable content validity index(CVI). Factor analysis extract 10 factors via varimax rotation, accounting for 75.8% of totalvariance. Cronbach’s alpha of all factors was more than 0.7.Conclusion: We conclude that the Persian version of QLACS questionnaire has optimal properties for assessment quality of life among Iranian short-survivors of breast cancer

کلیدواژه ها:

QLACS ، questionnaire ، Cancer survivor ، Quality of life ، validity