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Effect of the number of peak expiratory flow readings per day on the estimation of diurnal variation
BACKGROUND—The number of peak expiratory flow (PEF) readings required per day to assess diurnal variation accurately is not known; published studies have used between two and seven PEF readings per day. This study compares the diurnal variation calculated using 2-10 PEF readings per day. METHODS—All...
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| Main Authors: | , , , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
BMJ Group
1998
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1745316/ https://ncbi.nlm.nih.gov/pubmed/10319063 |
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