. Author manuscript; available in PMC: 2015 Dec 1.

Published in final edited form as: Sleep Med. 2014 Sep 6;15(12):1500–1507. doi: 10.1016/j.sleep.2014.08.010

Table 6.

Correlation matrix for CRSP indices/subscales and ASHS indices and CRSP indices/subscales

	ASHS Subscales
	Physiology	Cognitive	Emotion	Environmental	Substances	Sleep Stability	Total
CRSP Subscales
Caffeine Use	−0.38	0.03	−0.10	−0.23	−0.36	−0.30	−0.36
Activities Before Bed	0.05	0.20	0.45^*	−0.13	−0.11	0.22	0.08
Sleep Location^a	−0.44^*	−0.14	−0.03	−0.66^**	−0.26	−0.10	−0.04
Electronics Use at Sleep Onset	−0.22	−0.08	−0.39	−0.50^*	0.10	−0.09	−0.59^**
Bedtime Fears/Worries^a	0.02	0.11	−0.26	0.02	0.20	0.04	−0.26
Restless Legs Symptoms (Observed)	−0.39	−0.13	−0.51^*	−0.51^*	0.09	0.09	−0.08
Restless Legs Symptoms (Reported)	0.20	0.36	0.00	−0.12	−0.05	0.09	−0.15
Parasomnias	0.28	0.21	0.19	0.02	0.01	0.12	−0.19
Insomnia	−0.02	−0.29	−0.58^**	.142	0.10	0.06	−0.20

p <.05

^**

p < .01.

Square root transformation used.

CRSP = Children's Report of Sleep Problems. ASHS = Adolescent Sleep Hygiene Scale.