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Spearman’s correlation coefficient (rho) of spirometry and Pittsburgh Sleep Quality Index (PSQI) and Epworth Sleepiness Scale (ESS) (ESS) in the pre-rehabilitation period
| FEV1 L/MIN | FVC L/MIN | FEV1FVC | |
|---|---|---|---|
| FSa PSQI | −0.005 | − 0.055 | − 0.006 |
| ESS | − 0.217 | − 0.269 | − 0.158 |
FEV1 Forced expiratory volume in the first second, L liter, min minute, FVC forced vital capacity, FSa final score average, PSQI Pittsburgh index, ESS Epworth scale
