Table 3.

Correlation of variables with PSG AHI

Variable	Pearson correlation	p value
Age	0.07	0.31
Gender	0.18	0.01
BMI	0.48	< 0.01
ESS	0.18	0.01
Berlin	0.27	< 0.01
MAP	0.41	< 0.01
NF RDI	0.89	< 0.01

PSG AHI, polysomnography derived apnea-hypopnea index; BMI, body mass index; ESS, Epworth Sleepiness Scale; NF, nasal flow; RDI, respiratory disturbance index; MAP, multivariate apnea index.