Table 3.

The differences between CPAP return and keep groups according the results from questionnaires.

Questionnaire	CPAP Fail (n = 278)	CPAP Keep (n = 372)	p
Epworth Sleepiness Scale	8.87 (±4.71)	10.57 (±5.07)	.000∗
Stanford Sleepiness Scale	3.13 (±1.49)	2.97 (±1.43)	.174
HAD_Anxiety	8.34 (±4.37)	7.55 (±4.10)	.020∗
HAD_Depression	6.50 (±4.04)	5.96 (±3.72)	.083
ISI	12.37 (±6.32)	12.80 (±6.09)	.383
STOP-BANG	4.20 (±1.34)	4.48 (±1.30)	.009∗

HAD, Hospital Anxiety Depression; ISI, Insomnia severity index.