Table 2.

Comparison of self-report questionnaires between compliant and non-compliant with CPAP groups

Questionnaire	Compliant (N=80)	Non-compliant (N=108)	Statistics†
ESS, total score	8.6±3.7	8.3±3.6	t=-0.49, p=0.625
BDI, total score	10.5±7.0	11.1±7.8	t=0.60, p=0.551
Insomnia severity index
Total score	14.2±5.6	15.6±5.7	t=1.67, p=0.097*
Difficulty falling asleep	0.6±0.8	0.7±1.0	t=0.89, p=0.374
Difficulty staying asleep	0.9±1.1	1.1±1.1	t=1.24, p=0.218
Waking up early	1.3±1.1	1.5±1.2	t=0.91, p=0.364
How dissatisfied	3.3±1.2	3.6±1.0	t=1.69, p=0.094*
How noticeable	2.3±1.2	2.7±1.2	t=1.81, p=0.072*
How worried/distressed	3.0±1.3	3.2±1.3	t=0.57, p=0.567
Interfering with function	2.7±1.1	2.9±1.1	t=1.22, p=0.223
PSQI
PSQI, total score	7.8±2.9	8.2±3.4	t=0.52, p=0.603
PSQI, total sleep time	380.3±75.3	384.6±79.2	t=0.37, p=0.715
PSQI, sleep efficiency	90.5±11.6	91.1±12.5	t=0.32, p=0.752
Overall sleep quality	1.7±0.8	2.0±0.7	t=2.41, p=0.017**

Data are mean±standard deviation values.

^*p<0.1;

^**p<0.05;

^†independent t-test.

BDI, Beck Depression Inventory; CPAP, continuous positive airway pressure; ESS, Epworth Sleepiness Scale; PSQI, Pittsburgh Sleep Quality Index