Breast Cancer Surgery Quality of Life Scale: Turkish Validity and Reliability Study

Aim: This study aimed to evaluate the validity and reliability of the Turkish version of the breast cancer surgery quality of life scale (BCSQOL) among patients who underwent surgical treatment for breast cancer. Materials and Methods:The study sample consisted of 250 female patients who had undergone breast cancer surgery.Following the translation of the scale into Turkish, content and face validity analyses were conducted.Construct validity was assessed using confirmatory factor analysis.For reliability testing, the test-retest method was employed.Additionally, omega and Cronbach's alpha coefficients were calculated for the subdimensions of the scale. Results:The chi-square/DF ratio was found to be 1.064, and the root mean square error of approximation value was 0.017.The comparative fit index, adjusted goodness-of-fit index, normed fit index, Tucker-Lewis index, and incremental fit index values indicated a "good fit", while the standardized root mean square residual and goodness of fit index values indicated an "acceptable fit" according to confirmatory factor analysis results.Cronbach's alpha coefficients for the subdimensions ranged between 0.79 and 0.95, and omega coefficients ranged between 0.97 and 1.00.The total Cronbach's alpha coefficient of the scale was 0.79.The scale comprises 49 items across 8 subdimensions: physical activity, pain, feelings, body image, physical health, sexual function, general health, and relationships with others. Conclusion:Based on the findings, the Turkish version of the BCSQOL scale is a valid and reliable instrument for assessing quality of life in breast cancer patients following surgical treatment.