Table 1.

Descriptive statistics and correlations among community violence and indices of sleep.

	1	2	3	4	5	6	Mean (SD)
1. Community violence	–	.14	.03	.02	.33**	.25*	−.10 (.77)a
2. Sleep minutes	−.20*	–	.59***	−.37***	.00	−.08	391.88 (53.24)b
3. Sleep efficiency	−.34**	.59***	–	−.91***	.10	.04	89.50 (6.90)c
4. Long-wake episodes	.32**	−.42***	−.92***	–	−.12	−.11	2.36 (1.67) d
5. Sleep/wake problems	.22*	−.17+	−.09	.04	–	.44***	19.73 (6.99)
6. Sleepiness	.18+	−.14	−.08	.02	.37***	–	13.40 (4.15)
Mean (SD)	.10 (.88)	418.78 (53.36)	92.07 (6.40)	2.05 (1.76)	20.13 (6.57)	14.24 (3.59)

Associations and descriptive statistics reported below the diagonal for girls and above the diagonal for boys. The composite of community violence includes standardized indices of neighborhood crime (M_girls = 8.30, SD = 3.39; M_boys = 7.59, SD = 3.08), community violence (M_girls = 3.00, SD = 5.07; M_boys = 1.78, SD = 3.69), and school violence (M_girls = 2.73, SD = 4.18; M_boys = 2.34, SD = 4.81).

Superscripts denote differences between boys and girls.

^at = 1.81, P < .10;

^bt = 3.49, P < .01;

^ct = 2.69, P < .01;

^dt = −2.33.

⁺P < .10,

^*P < .05,

^*P < .01,

^***P < .001.