Regular ArticlePatient-assessed measures of health outcome in asthma: A comparison of four approaches☆
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Keywords
asthma
quality of life
patient-assessed
health status
responsiveness.
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This work was funded by NHS Executive Research and Development Directorate.
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Correspondence should be addressed to: Dr A.M. Garratt, Unit of Health-Care Epidemiology, Institute of Health Sciences, Old Road, Oxford OX3 7LF, UK. Fax: 01865 226993.
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