Abstract
Background: The aim of this study was to provide an Italian version of the Haemophilia Activities List (HAL) and check its reliability in Italian medical centers. Methods: The Italian version of this assessment was administered to 80 patients (aged 18-65 years) affected by haemophilia A and B (moderate or severe). The validation was accomplished by comparing it to the revised and expanded Arthritis Impact Measurement Scales (AIMS2). Results: The internal consistency of the Italian version of the HAL had statistically high results: Cronbach's α 0.957-0.579. The highest internal consistency was measured in the domains ‘leg functionality' and in the overall points of the HAL questionnaire. The correlation between the AIMS2, which has been translated into Italian, and the version of the HAL questionnaire that we proposed, yielded good results for the following correlations: AIMS2 all and HAL overall (r = 0.64), AIMS2 physical function and HAL overall (r = 0.66), AIMS2 pain and HAL overall (r = 0.66). Conclusion: The Italian version of the HAL questionnaire presents both internal coherence and convergent validity. It can be used in addition to other functional tests to measure outcomes in moderate and severe haemophiliac diseases or to determine the quality of life as observed in the everyday life of patients.
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