Linguistic validation and translation of stroke impact scale version 3.0 in BANGLADESH

Abstract

Translation and Linguistic Validation has become very important for any Patient Reported Outcome Instruments. There is no specific quality-of-life scale for stroke patients has previously been translated and culturally adapted, for use in the Bangla language to detect accurate fact about their quality of life. Internationally, the instrument for this purpose is the Stroke Impact Scale 3.0 (SIS). The Use of SIS enables comprehensive analysis on the impact of stroke on patients’ lives. The impact of stroke can be worse and may result in serious deficits, which may reduce quality of life (QOL). Specific QOL measurement is needed to give an account and quantify the impact of this condition. The purpose of this study is to establish translation and linguistic validation of this SIS 3.0 in Bangla language. The objectives are to understand the actual meaning of each questionnaires to the patients, to identify the linguistic problematic which is face by patients, to determine that all the data collect by this scale are clean and conceptually equivalent to the instrument, to modify non-suitable items from the domain to improve the measurement of impact of stroke. Native-speaking citizens of the target countries who reported stroke related problems were asked to review a translation of the SIS 3.0 questionnaire, which was harmonized in Bengali languages. During a cognitive debriefing interview, participants were asked to identify any words that were difficult to understand and explain in their own words the meaning of each sentence in the questionnaire. The qualitative analysis was conducted by local linguistic validation teams (original translators, back translator, clinical occupational therapist, interviewer, and another expert). After analyzing the data found that Translation and linguistic validation of Stroke Impact Scale 3.0 has performed successfully by considering and adapting cultural context, patient’s response and opinion of expert committee. After cognitive debriefing assumed that by using this translated scale data can be collected in short time and also use for research purpose. Further Psychometric Properties of the Stroke Impact Scale 3.0 will be carried out. Key Words: Stroke, Translation and linguistic validation, Stroke Impact Scale 3.0, Quality of life.