Due to the complex and chronic nature of respiratory diseases, there may be significant heterogeneity in pulmonary function changes among patients with respiratory diseases.
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The association between abdominal obesity and pulmonary function trajectories among patients with COPD.
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The sentences
The mean PEF value showed a decreasing trend, with respective average values of 205.84 L/min (SD = 104.16), 199.99 L/min (SD = 99.52), and 196.06 L/min (SD = 86.74) in 2011, 2013 and 2015.