[Retracted] An Exploratory Study on the Treatment of Obstructive Apnea-Hypopnea Syndrome by Nasal Cavity Expansion

Table 3

Epworth Sleepiness Scale.

Item	Never drowsy	Slightly drowsy	Moderately drowsy	Severe drowsy
Reading book	0	1	2	3
Watching TV	0	1	2	3
Sit still	0	1	2	3
One hour by car	0	1	2	3
Lunch break	0	1	2	3
Sit and talk	0	1	2	3
Lunch	0	1	2	3

Tips: >6 means drowsy, >11 means over drowsy, and >16 means dangerous drowsy.