Cultural and linguistic testing of the Handling Questionnaire: a specific instrument for assessing the patientâ€™s acceptability of dry powder inhalers
AbstractThe testing and checking phases of a questionnaire are briefly described in this paper, identifying the common errors due to incorrect formulation of questions and the main issues. The theoretical methods for â€œtestingâ€ a questionnaire has been examined in the first section, in the second section the testing process for a specific questionnaire for assessing the patientâ€™s acceptability of a dry powder device (the Handling Questionnaire) has been described, together with the grading of improvement achieved.
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