Adaptation of the VaccinaTion & Hpv Knowledge (THinK) Questionnaire into Turkish: Validity and Reliability: A Methodological Study

Abstract

Objective: This study adapts “VaccinaTion & Hpv Knowledge (THinK) questionnaire,” by Matranga et al. to Turkish, testing its validity and reliability in this context. Material and Methods: The research involved 300 female participants who applied to the Department of Obstetrics and Gynecology at Lokman Hekim University Ankara Hospital between December 2022-March 2023. Data were collected using face-to-face inter-views. Statistical analyses employed SPSS (25.0) and AMOS (25.0) soft-ware. Results: Linguistic validity was established through translation-back translation with input from 4 experts and a Turkish language specialist. Ex-ploratory factor analysis yielded a 16-item Turkish version with 3 subscales: “Knowledge about vaccines”, “Knowledge of HPV infection” and “Atti-tude to be vaccinated against HPV”. The total explained variance was calculated as 57.26%. Confirmatory factor analysis confirmed 3-factor structure of the scale. Model fit indices were calculated as follows: χ2/df=2.212, root mean square error of approximation=0.064, Comparative Fit Index=0.944, Goodness of Fit Index=0.935, Adjustment Goodness of Fit Index=0.903, Normed Fit Index=0.903, and Tucker-Lewis Index=0.928. Internal consistency and discriminant validity analyses supported the scale’s reliability and validity. The internal consistency reliability coefficient (Cronbach’s alpha) for the scale was calculated as 0.801. The Spearman-Brown coefficient was found to be 0.874. Conclusion: As a result of the Turkish adaptation, va-lidity, and reliability analyses of “THinK Questionnaire”, it was concluded that the three-factor structure of the scale is robust and that the scale can be used as a valid and reliable measurement tool.