TABLE 2.

Summary of hierarchical regression analysis for variables predicting insomnia (n = 6,445).

	Model 1			Model 2			Model 3			Model 3
Predictor variables	B	SE	β	B	SE	β	B	SE	β	95% CI
Step 1: Demographic
Child sex	−0.03	0.01	−0.04∗∗	−0.02	0.01	−0.02∗	0.01	0.01	0.02	−0.004–0.028
Child age	0.03	0.01	0.13∗∗∗	0.02	0.01	0.11∗∗∗	0.02	0.01	0.09∗∗∗	0.015–0.023
Step 2: Behavioral health and social environment
Alcohol abuse				0.02	0.01	0.05∗∗∗	0.02	0.01	0.04∗∗	0.007–0.027
Suicidality				0.06	0.01	0.21∗∗∗	0.02	0.01	0.06∗∗∗	0.012–0.026
Family support				−0.05	0.01	−0.09∗∗∗	−0.04	0.01	−0.06∗∗∗	−0.048 to −0.022
School connectedness				−0.16	0.01	−0.20∗∗∗	−0.04	0.01	−0.05∗∗∗	−0.060 to −0.022
Favorable neighborhood				−0.10	0.01	−0.18∗∗∗	−0.05	0.01	−0.10∗∗∗	−0.065 to −0.040
Step 3: Mental health
Depression							0.23	0.01	0.29∗∗∗	0.204–0.253
Anxiety							0.14	0.01	0.14∗∗∗	0.115–0.162
ADHD							0.10	0.01	0.11∗∗∗	0.080–0.121
Fit test
Adjusted R2			0.02			0.24			0.36
R2 change			0.02			0.22			0.12

Codes for sex are 1 = male, 0 = female. ^∗p < 0.05, ^∗∗p < 0.01, ^∗∗∗p < 0.001.