Duration and Frequency of Spirometry Needed to Accurately Reflect Annualized Change of FEV1 in COPD
Dec 04, 2024

n a large cohort of patients with moderate to very severe COPD, the annualized rate of change in FEV1 was accurately represented by a minimum of two annual follow-up measurements over 18 months compared with semiannual testing over 42 months.


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