Relationships between Obstructive Sleep Apnea Syndrome, Continuous Positive Airway Pressure Treatment, and Inflammatory Cytokines

Table 4

Results from correlations and regressions exploring relationships between serum TNF-α levels and polysomnographic parameters impacted by CPAP treatment.

	Correlation		Regression
	𝑟	𝑃	𝑡	𝑃
ΔMinimum SaO2	−0.271	0.191	−0.144	0.887
ΔMean SaO2	−0.462	0.020	−2.138	0.047
ΔSaO2 ≥ 90 (% TST)	−0.224	0.283	1.372	0.188
ΔESS	0.050	0.811	0.504	0.621
ΔAHI	0.252	0.224	0.099	0.922
ΔREM	−0.087	0.679	−0.284	0.780
ΔNREM	−0.115	0.584	−0.288	0.777

Minimum SaO₂: the lowest oxygen saturation recorded during sleep; mean SaO₂: the average oxygen saturation recorded during sleep; SaO₂ ≥ 90 (% TST): the amount of total sleep time spent at ≥90% saturation; ESS: Epworth sleepiness scale; AHI: apnea-hypopnea index.