The Turkish version of the Skin Tear Knowledge Assessment Instrument (OASES): Validity and reliability study

This study was conducted to adapt the Skin Tear Knowledge Assessment Instrument (OASES) into Turkish and to verify its validity and reliability. This study was conducted on 314 nurses in Türkiye between November 2023 and February 2024 to test the psychometric properties of OASES. The instrument consists of 20 items clustered into six domains. The cultural adaptation process was carried out according to the International Testing Commission guidelines: Turkish translation, expert panel, content validity, translation back to English, preliminary study and the final version of the instrument. To check the validity of the multiple-choice test, item difficulty and discriminating index were analysed. The reliability of the instrument was evaluated to the retest 14 days after the first test. Scale level content validity by 11 experts in wound care was 0,97 (I-CVI = 0.8-1.0). In the item analysed of the OASES, the item difficulty index was 0,51 (p-value = 0.34-0.76) and the discriminating index was 0.40 (D-value = 0.26-0.51). The 2-week test-retest intraclass correlation coefficient of the overall instrument was 0.90 (95% CI = 0.79-0.95). The Turkish version of OASES is a valid and reliable measurement instrument to evaluate nurses' knowledge levels regarding skin tears with acceptable psychometric properties. It can be applied in nursing education, research and practice to evaluate the knowledge of Turkish speaking nurses about skin tears.