. Author manuscript; available in PMC: 2015 May 21.

Published in final edited form as: J Spec Pediatr Nurs. 2012 Nov 27;18(1):13–24. doi: 10.1111/jspn.12005

Table 3.

Correlations Between Nighttime Sleep Characteristics

	Total sleep time	Sleep latency	Awakenings	Average sleep episode	Longest sleep episode	Wake after sleep onset	Sleep efficiency
Sleep period duration	.88^**	.06	.60^**	−.29	.11	.54^**	−.31^*
Total sleep time		.04	.35^*	.01	.26	.09	.15
Sleep latency			<01	−.12	.11	−.09	.09
Awakenings				−.86^**	−.40^*	54^**	−.57^**
Average sleep episode					42^**	−.62^**	.65^**
Longest sleep episode						−.23	.34^*
Wake after sleep onset							. 96^**

p < .05,

^**

p < .01 (two-tailed)