Application of oxygen saturation variability analysis for the detection of exacerbation in individuals with COPD: A proof-of-concept study.

Physiol Rep · 2021 · PMC8634631 · PMID 34851045

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an increasing trendno p-value reported

Additionally, an increasing trend of sample entropy value from scale 1 to 5 in both COPD phases was observed (Figure 2 ), revealing that fluctuated S p O 2 time series is not a random process (Costa et al., 2002 ).

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