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Peak expiratory flow (PEF) monitoring is recommended in the management of moderate to severe asthma, 1 and PEF outcome variables are used in many clinical trials. However, adherence with PEF monitoring is poor, and this is often attributed to the burden of measurement and recording. This analysis examined whether adherence with symptom monitoring was impaired by asking patients also to record PEF measurements.
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Slader et al. (2007) studied this question.
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