Cross-cultural adaptation, content validity, and item analysis of the Objective and Subjective Knowledge and HIV Testing Scale for the Brazilian population

Abstract

Introduction: The objective was to propose a Portuguese version of the Objective and Subjective Knowledge and HIV Testing Scale (OSK-HIV-TS), to assess content validity and to perform analysis of items when applied to a sample of undergraduate students. Methods: Three translators translated the OSK-HIV-TS into Portuguese. Judges evaluated each item of the consensual version of the translated instrument according to semantic, idiomatic, cultural, and conceptual equivalences. A consensus committee reviewed the back-translated and original versions of the OSK-HIV-TS. Content validity was calculated by content validity index and analysis of items conducted using Classical Test Theory (CTT). Results: The translated scale presented semantic, idiomatic, conceptual, and cultural equivalence in relation to the original version. A total of 491 undergraduate students participated and a high proportion of right answers was observed on the distribution of students' responses to the OSK-HIV-TS. All items were classified as easy or very Trends Psychiatry Psychother -Pre-Proof -http://doi.org/10.47626/2237-6089-2022-0519 easy and only the item 16 was classified as strong according to discrimination index. Conclusion:The OSK-HIV-TS is a novel instrument for assessing HIV knowledge in Brazilian literature that can inspire more research on HIV/AIDS behavior and associated factors, which, despite being essential and necessary, are still lacking in the Brazilian literature.