Validity and reliability of the Turkish version of the Canadian Haemophilia Outcomes-Kids’ Life Assessment Tool (The CHO-KLAT)

Abstract

Objective: The evaluation of health-related quality of life (HRQoL) is encouraged to assess the multidimensional impact of treatments and disease and to improve care in boys with hemophilia (BwH). However, validated HRQoL tools for BwH are not yet available for Turkish. The purpose of this study was to assess the validity and reliability of the Canadian Hemophilia Outcomes-Kids’ Life Assessment Tool (CHO-KLAT), version 2.0, which is multilingual valid tool, in Turkish. Methods: The procedure included 4 steps: linguistic translation, content validity, validity evaluation with the Pediatric Quality of Life (PedsQL), finally test-retest analysis for reliability assessment. The participants were questioned for the type and severity of hemophilia, medical treatment, and inhibitor status. Results: The primary Turkish version of the CHO-KLAT evolved with the cooperation of the Canadian and Turkish teams. Content validity was performed with 9 experts and latest version of Turkish CHO-KLAT was produced. This multicenter study was conducted with 53 BwH aged 4-18 for validity assessment, 52 BwH for test-retest reliability. The mean age of BwH was 11.6 (standard deviation (SD): 4.2). The means of CHO-KLAT and PedsQL were 64.1 (SD: 4.2) and 66.7 (SD: 15.3). As a result of the validity evaluation, a strong correlation was found between CHO-KLAT and PedsQL (r = 0.603; P < .001). The interclass correlation coefficient was 0.887 in the test-retest reliability. Conclusion: The Turkish version of CHO-KLAT 2.0 was validated. It is now available to be used in clinical studies for HRQoL assessment of Turkish BwH.