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J Eval Clin Pract. 2009 Aug;15(4):713-23. doi: 10.1111/j.1365-2753.2008.01088.x.

A structured questionnaire to assess patient compliance and beliefs about medicines taking into account the ordered categorical structure of data.

Author information

1
Department of Clinical Pharmacology, Lund University, Lund, Sweden. asa.bondesson@apoteket.se

Abstract

RATIONALE, AIMS AND OBJECTIVE:

The objectives were to describe and evaluate the structured medication questionnaire and to improve data handling of results from the Morisky four-item scale for patient compliance and Beliefs about Medicines Questionnaire-specific (BMQ-specific).

METHODS:

A questionnaire was developed with the purpose of being used when identifying medication errors and assessing patient compliance to and beliefs about medicines.

RESULTS:

A majority of the respondents (62%; CI 45-77%) had at least one medication error. Assuming that all items are equally important in the Morisky four-item scale we presented four alternative ways to create a unidimensional global scale. A two-dimensional global scale was also constructed. The results from the BMQ-specific were presented in different ways, all taking into account that the scale has ordered verbal categories: at the level addressing each specific question, at the sub-scales 'concern' and 'necessity' level and at the global level.

CONCLUSIONS:

The structured medication questionnaire can be used in daily practice as a tool to identify drug-related problems. The choice of how to use and present data from those scales in research depends on patient characteristics and how discriminating one would like the scales to be.

[Indexed for MEDLINE]

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