Values are numbers (percentages) unless stated otherwise. Abbreviations: IQR, interquartile range; n, number. P values indicate differences between good-sleep and poor-sleep patients. P < 0.05 was considered statistically significant.
†Data were missing for the measurement of percutaneous oxygen saturation in eight patients (13.3%) of the good-sleep group, and nine patients (12.0%) of the poor-sleep group.