VALIDITY AND RELIABILITY OF THE ARABIC VERSION OF THE HEADACHE IMPACT TEST

Abstract

Background: Nearly half of the world's population currently has headaches, which are the most prevalent neurologic complaint. The prevalence of headaches reduces with age, yet it is nevertheless a typical neurologic condition among elderly populations. Purpose: In this study, an Arabic-language adaptation of the Headache Impact Test questionnaire internal consistency reliability, test-retest reliability, feasibility, face validity, and content validity were examined in patients with headaches. Methods: In this study, 90 patients with headaches, ages 18 to 65, and three expert panels, each with ten specialists, took part. Backward translation, preliminary initial translation, forward translation, creation of the pre final version, and expert testing of the pre final version. Both the clarity and the proportion of relevance were evaluated by separate panels. The previous panel of experts evaluated the pre final version. The final version was then put to the test on actual patients. For statistical analysis, the Clarity Index, Expert Proportion of Relevance, Descriptive Statistics, Missed Item Index, Cronbach's Alpha, and Intra-rater Class Correlation Coefficient were used. Results: According to the study, the Arabic version of the Headache Impact Test has great face validity with a scale index of clarity of 93.33% and outstanding content validity of 98.33%; with a scale feasibility all items were filled out on 100% of the sheets. The Intraclass correlation coefficient between the test and the retest was 0.990, while Cronbach's alpha was 0.865. Conclusion: The Headache Impact Test questionnaire in Arabic has sufficient internal consistency, test-retest reliability, and face and content validity to quantify the severity of headache in Arabic-speaking headache patients.