Table 2. Results of Nested OLS Regression Models indicating Associations Between Language-Based Bedtime Routine at age 3 and Sleep Duration (hours) at Age 5.

	Unmatched Results		Propensity Score Results
	Model 1 (Unadjusted B)	Model 2 (Adjusted B)	Model 1 (Unadjusted B)	Model 2 (Adjusted B)
Language-based Bedtime Routine	0.26***	0.16**	0.19***	0.16*
	[0.16, 0.36]	[0.06, 0.26]	[0.05, 0.34]	[0.02, 0.29]
Observations	2,997	2,997	2,210	2,210

^***p<.001

^**p<.01

^*p<.05

⁺p<.10

Note: Beta coefficients and confidence intervals are presented. Model 1 presents the unadjusted bivariate results. Model 2 includes controls for other bedtime routines, and all of the child characteristics and demographic characteristics of the caregiver and household (listed in Table 1)