Longitudinal Analysis of Pulmonary Function Impairment One Year Post-COVID-19: A Single-Center Study.

Forced Expiratory Volume in 1 s (FEV1) trended lower in severe cases with 90.8 ± 13.1, compared to 96.6 ± 13.8 in mild cases and 92.4 ± 10.9 in moderate cases, although the p -value of 0.054 suggests this did not reach statistical significance.

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Similarly, the Forced Expiratory Flow 25–75% (FEF25-75) and the diffusing capacity of the lungs for carbon monoxide (DLCO) showed a trend toward lower values with increasing disease severity, but these changes were not statistically significant ( p = 0.059 and p = 0.052, respectively).

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Surprisingly, although this finding did not achieve statistical significance, there was an observed trend toward a decreased risk of mortality among individuals with asthma [ 23 ].

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