Study of Exhaled Nitric Oxide in Subjects with Suspected Obstructive Sleep Apnea: A Pilot Study in Vietnam

Table 3

Correlations between CANO and snoring, Epworth score, and PSG parameters.

Parameters	Control subjects (); CANO = 3.2 ± 1.1	OSA subjects (); CANO = 5.3 ± 1.9
Snoring	= −0.040, = 0.833	= −0.150, = 0.287
Epworth score	= −0.305, = 0.101	= −0.187, = 0.184
AHI, /h	= 0.140, = 0.462	= 0.595, < 0.0001
SpO2, %	= −0.166, = 0.381	= −0.153, = 0.278
Nadir SpO2 (%)	= −0.215, = 0.254	= −0.374, = 0.034
Arousal index	= −0.102, = 0.592	= −0.207, = 0.141

CANO: alveolar nitric oxide concentration; PSG: polysomnography; OSA: obstructive sleep apnea; AHI: apnea-hypopnea index.