Table 2.

Subjective sleep quality (PSQI).

	Patients		Controls
	Mean	(SD)	Mean	(SD)	p	Effect size
PSQI total score	15.67	(2.92)	3.79	(1.50)	.000*	5.39
Time in bed (min)	436.2	(129.6)	459	(48.6)	.462	−0.26
Sleep duration (min)	277.8	(96.0)	420	(46.8)	.000*	−1.99
Sleep latency (min)	59.38	(10.61)	45.02	(6.60)	.000*	1.67
Sleep efficiency (%)	67.10	(19.61)	91.67	(6.51)	.000*	−1.88

Note: PSQI, Pittsburgh Sleep Quality Index.

*Significant group difference, p < .05.