Uysal, Songul AtasavunKabak, Vesile YildizKarakas, YusufKarabulut, ErdemKocamaz, Deniz ErdanKeser, IlkeOzdemir, Kadirhan2024-03-092024-03-0920221478-95151478-9523https://doi.org/10.1017/S147895152100136Xhttps://hdl.handle.net/20.500.14034/1341Objective The Functional Assessment of Cancer Therapy-Cognitive Function (FACT-Cog) is a questionnaire that is used to evaluate the quality of life and cognitive functions according to individual self-reports. The aim of this study was to investigate the validity and reliability of the Turkish version of the FACT-Cog. Methods Cancer patients who were treated with chemo or radiotherapy and had a score of 24/30 and more in Mini-Mental State Examination (MMSE) were included in this study. Cognitive functions assessed with the FACT-Cog and the European Organization of Research and Treatment of Cancer Quality of Life Core Questionnaire Core 30: Cognitive Function subscale (EORTC QLQ-CF). Results One hundred and forty cancer patients [female = 87 (62.1%), male = 53 (37.9%)] were included. The mean age of the participants was 47.93 +/- 11.90 years. The Cronbach's alpha of the FACT-Cog scale was 0.82. Test-retest intraclass correlation coefficient values of the FACT-Cog questionnaire were varied from 0.855 to 0.954. There were found low correlations between the total score of the FACT-Cog and the MMSE (r = 0.26, p = 0.002), and moderate correlations between the EORTC QLQ-CF subscale and the FACT-Cog (r = -0.43; p < 0.001). Significance of results It showed the validity and reliability of the Turkish version of the FACT-Cog questionnaire for cancer patients. It may be beneficial to use this questionnaire for the effects of cancer treatment.eninfo:eu-repo/semantics/closedAccessCancer Treatment; Cognitive Function; Functional Assessment; Quality Of LifeArticle10.1017/S147895152100136X205694700Q2WOS:0007795648000012-s2.0-8511435738734470680Q1