Table 4.

Inter-correlations between SLEEP-50 Questionnaire and Pittsburgh Sleep Quality Index Subscales.

Pittsburgh Sleep Quality Index Subscales and Total Score Trichotillomania
		Overall Sleep quality	Sleep latency	Sleep duration	Sleep efficiency	Sleep disturbance	Needs meds to sleep	Daytime dysfunction due to sleepiness	Total score
SLEEP-50 Questionnaire Subscales and Total Score	(1) Sleep apnea	0.35^***	0.21^**	0.09	0.23^***	0.50^***	0.20^**	0.26^***	0.40^***
	(2) Insomnia	0.63^***	0.65^***	0.05	0.55^***	0.42^***	0.29^***	0.42^***	0.75^***
	(3) Narcolepsy	0.39^***	0.22^**	0.07	0.27^***	0.34^***	−0.01	0.51^***	0.41^***
	(4) Restless leg syndrome/PLMD	0.42^***	0.35^***	0.08	0.24^***	0.31^***	0.10	0.31^***	0.43^***
	(5) CRSD	0.36^***	0.28^***	0.07	0.29^***	0.22^**	0.05	0.37^***	0.42^***
	(6) Sleepwalking	0.19^**	0.16^*	0.06	0.16^*	0.08	0.0002	0.28^***	0.25^**
	(7) Nightmares	0.34^***	0.18^**	0.12	0.19^**	0.39^***	0.08	0.34^***	0.39^***
	(8) Factors influencing sleep	0.43^***	0.37^***	0.05	0.34^***	0.24^***	0.40^***	0.47^***	0.57^***
	(9) Impact	0.60^***	0.39^***	0.10	0.38^***	0.28^***	0.20^**	0.63^***	0.63^***
	(10) Overall complaints	0.62^***	0.49^***	0.12	0.46^***	0.54^***	0.21^**	0.52^***	0.71^***
Pittsburgh Sleep Quality Index Subscales and total score Excoriation (Skin-Picking) Disorder
		Overall sleep quality	Sleep latency	Sleep duration	Sleep efficiency	Sleep disturbance	Needs meds to sleep	Daytime dysfunction due to sleepiness	Total score

SLEEP-50 Questionnaire Subscales and Total Score	(1) Sleep apnea	0.23^**	0.12	0.12	0.02	0.41^***	0.22^**	0.26^**	0.39^***
	(2) Insomnia	0.60^***	0.59^***	0.01	0.35^***	0.45^***	0.22^**	0.33^***	0.65^***
	(3) Narcolepsy	0.17^*	0.04	0.11	0.08	0.37^***	0.02	0.50^***	0.31^***
	(4) Restless leg syndrome/PLMD	0.29^***	0.12	0.05	0.05	0.33^***	−0.001	0.12	0.23^**
	(5) CRSD	0.16^*	0.23^**	0.03	−0.002	0.03	−0.08	0.17^*	0.15
	(6) Sleepwalking	0.06	0.02	0.03	0.08	0.03	0.21^**	0.12	0.17^*
	(7) Nightmares	0.06	0.17^*	0.03	0.06	0.35^***	0.07	0.24^**	0.23^**
	(8) Factors influencing sleep	0.39^***	0.19^*	0.10^*	0.15	0.29^***	0.31^***	0.43^***	0.51^***
	(9) Impact	0.60^***	0.34^***	0.02	0.21^**	0.33^***	0.07	0.64^***	0.56^***
	(10) Overal complaintsl	0.44^***	0.41^***	0.08	0.20^*	0.56^***	0.18^*	0.43^***	0.58^***

Note. PLMD = Periodic limb movement disorder; CRSD = Circadian rhythms sleep Disorder; Impact = Impact of sleep complaints on daily functioning

p < 0.05.

^**

p < 0.01.

^***

p < 0.001.