Table 3.

SLEEP-50 Questionnaire inter-factor correlations for Trichotillomania and Excoriation Disorder.

	Trichotillomania									Excoriation Disorder
Factor	1	2	3	4	5	6	7	8	9	1	2	3	4	5	6	7	8	9
(1) Sleep apnea	–									–
(2) Insomnia	0.43***	–								0.41***	–
(3) Narcolepsy	0.54***	0.62***	–							0.81***	0.37***	–
(4) Restless legs/ PLMD	0.55***	0.46***	0.51***	–						0.54***	0.41***	0.56***	–
(5) CRSD	0.32***	0.57***	0.73***	0.28**	–					0.10***	0.26**	0.33*	0.28*	–
(6) Sleepwalking	−0.21**	0.52***	0.733***	0.47***	0.58***	–				0.41**	0.12	0.23***	0.48***	−0.81***	–
(7) Nightmares	0.71***	0.76***	0.61***	0.70***	0.50***	0.53**	–			0.71***	0.61***	1.21***	0.66***	0.10	0.28***	–
(8) Factors influencing sleep	0.40***	0.63***	0.68***	0.34***	0.59***	0.12	0.46***	–		0.50***	0.55***	0.57***	0.43***	0.35**	0.50***	0.46***	–
(9) Impact	0.44***	0.69***	0.72***	0.39***	0.73***	0.56***	0.68***	0.75***	–	0.50***	0.62***	0.70***	0.38***	0.38***	0.33***	0.58***	0.75***	–

Note. Trichotillomania (Hair-Pulling Disorder); Excoriation (Skin-Picking) Disorder; CRSD=Circadian rhythm sleep disorder; Impact=Impact of sleep complaints on daily functioning

^*p < 0.0.

^**p < 0.01.

^***p < 0.001.