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Title
Quantitative versus qualitative analysis of peak expiratory flow in occupational asthma.
Authors
Côté, J; Kennedy, S; Chan-Yeung, M
Abstract
Peak expiratory flow rates (PEF) are often used to confirm the diagnosis of occupational asthma. The records are usually analysed qualitatively, and this may lead to interobserver disagreement. In this study the diagnostic value of a qualitative assessment of change in PEF was compared with objective measures of change in PEF and the results of a specific inhalation challenge test with plicatic acid.