Table 6.

Unstandardized and Standardized Regression Models Predicting BITSEA Total Problem Scale Scores at 12 months Using PediaTrac Sleep Efficiency

Variable	B	95% CI for B		SE B	β
		LL	UL
Step 1
Constant	27.47***	14.94	40.00	6.36
PediaTrac Sleep Efficiency	−0.23***	−0.36	−0.10	0.06	−0.17
Cumulative Risk	0.85***	0.50	1.19	0.17	0.25
Infant Sexa	0.48	−0.47	1.43	0.48	0.05
Siteb	0.71	−0.29	1.71	0.51	0.07
Step 2
Constant	25.54***	10.09	41.00	7.82
PediaTrac Sleep Efficiency	−0.21**	−0.37	−0.05	0.08	−0.16
Cumulative Risk	0.84***	0.50	1.19	0.18	0.25
Infant Sexa	0.47	−0.48	1.42	0.48	0.05
Siteb	0.71	−0.29	1.71	0.51	0.07
PediaTrac Sleep * Risk	−0.03	−0.13	0.08	0.05	−0.03

Note. Statistics were averaged across multiply imputed data sets (m = 20). Sleep efficiency was assessed at 9 months. Sleep efficiency and cumulative risk were mean centered prior to computing the interaction term. BITSEA = Brief Infant-Toddler Social-Emotional Assessment; CI = confidence interval; LL = lower limit; UL = upper limit

^aInfant sex was coded as 0 = female, 1 = male.

^bSite was coded as 0 = Site 3, 1 = Site 1|2.

^*p < .05.

^**p < .01.

^***p < .001.