Table 3.

Group differences and bivariate associations between numbers of types of maltreatment reported and sleep measures

	Groups*		Regression
Measures	Non-maltreated	Maltreated	B	r	p-value
Sleep Efficiency (%)	89.58 ± 4.00	86.91 ± 4.10	−0.906	.609	.00007
Total Sleep Time (min)	387.6 ± 122.3	359.8 ± 79.8	−7.209	.242	.19
Wake After Sleep Onset (min)	42.42 ± 15.70	51.45 ± 18.19	3.292	.552	.0013
Number of Awakenings	16.98 ± 5.67	20.29 ± 7.00	1.030	.447	.012
Average Wake Duration (min)	2.46 ± 0.45	2.38 ± 0.51	.061	.417	.020

*Means from ANCOVA with covariates for gender, age, financial sufficiency and parental education. B = unstandardized regression coefficient.