Table 3.

Discriminant Function Coefficients

Variable	Coefficient
Age	0.038
CCI	0.330
BMI	0.068
Daytime SaO2	−0.071
Minimum SaO2	−0.025
REM mean SaO2	0.012
Mean SaO2	−0.018
DI	−0.005
Hyponeas/h	0.005
AHI	−0.004
ESS	0.016

Abbreviations: AHI, apnea‐hypopnea index; BMI, body mass index; CCI, Charlson Comorbidity Index; daytime SaO₂, daytime mean oxygen saturation; DI, desaturation index; ESS, Epworth Sleepiness Scale; hypopneas/h, number of hypopneas per hour of total sleep time; mean SaO₂, mean oxygen saturation during respiratory events; minimum SaO₂, minimum oxygen saturation during sleep; REM mean SaO₂, mean saturation during rapid eye movement sleep.