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Development of the Satisfaction with Inhaled Asthma Treatment Questionnaire

¹ Peninsula Medical School, Exeter, ² MEDTAP International, and ³ Imperial College of Science, Technology and Medicine, National Heart and Lung Institute Division, Charing Cross Hospital, London, UK

CORRESPONDENCE: J.L. Campbell, Peninsula Medical School, Exeter,, EX2 5DW,, UK. Fax: 44 1392432223. E-mail: john.campbell@pms.ac.uk

Keywords: clinical data, drug administration, patient reports, respiratory, survey

Received: October 24, 2002
Accepted February 21, 2003

Research and development was financially supported by AstraZeneca, Lund, Sweden.

For the management of a condition such as asthma, patients should feel confident with their medication, feel that the treatment is adequate in controlling symptoms and that side-effects of the treatment are minimal.

As no comprehensive instrument to measure patient satisfaction with inhaled asthma medication existed, the Satisfaction with Asthma Treatment Questionnaire was developed. The procedures that were used are described, and the initial validation and reliability tests are reported. The study involved focus group meetings, development, testing and modification of a preliminary instrument, and testing of the revised instrument using different samples of patients with asthma.

Factor analysis of the 26-item questionnaire identified four domains reflecting four aspects of satisfaction: effectiveness of treatment, ease of use, medication burden, and side-effects and worries. Cronbach's alpha showed evidence of internal consistency reliability. Test/retest reliability ranged from 0.66–0.74. Interscale correlations were moderate-to-high. Significant correlations were found between domain and overall scale scores and patients' overall level of satisfaction.

The Satisfaction with Asthma Treatment Questionnaire is potentially a useful instrument for gaining insight into patient satisfaction with inhaled treatment for asthma.