Table 4.

Results of post-hoc cross-sectional mediation analyses with unstandardized indirect effects

IV	Mediator	DV	Significant Mediation?	Indirect Effect
Family SES	Bedtime Routine Consistency	Sleep Duration	No	Direct Effect: B = .008, p = .01
				Indirect Effect: B = .001, p > .05
				Prop. Mediated: B = .06, p > .05
Family SES	Poor Quality Sleep Environment	Sleep Duration	Yes	Direct Effect: B = .007, p = .03
				Indirect Effect: B = .002, p < .01
				Prop. Mediated: B = .22, p = .004
Family SES	Security Positive	Sleep Duration	Yes	Direct Effect: B = .008, p = .01
				Indirect Effect: B = .001, p = .04
				Prop. Mediated: B = .14, p = .05
Family SES	Bedtime Routine Consistency	Sleep Timing	Yes	Direct Effect: B = −.01, p < .001
				Indirect Effect: B = −.002, p < .01
				Prop. Mediated: B = .14, p = .006
Family SES	Poor Quality Sleep Environment	Sleep Timing	Yes	Direct Effect: B = −.01, p < .001
				Indirect Effect: B = −.003, p < .001
				Prop. Mediated: B = .21, p < .001
Family SES	Security Positive	Sleep Timing	Yes	Direct Effect: B = −.01, p < .001
				Indirect Effect: B = −.002, p < .001
				Prop. Mediated: B = .17, p < .001
Family SES	Bedtime Routine Consistency	Sleep Variability	Yes	Direct Effect: B = −.007, p = .02
				Indirect Effect: B = −.002, p < .001
				Prop. Mediated: B = .18, p = .01
Family SES	Poor Quality Sleep Environment	Sleep Variability	Yes	Direct Effect: B = −.006, p > .05
				Indirect Effect: B = −.002, p = .004
				Prop. Mediated: B = .25, p = .02
Family SES	Security Positive	Sleep Variability	Yes	Direct Effect: B = −.006, p = .03
				Indirect Effect: B = −.001, p = .02
				Prop. Mediated: B = .18, p = .03

Note: SES = socioeconomic status; Prop. Mediated = the proportion of the effect of the IV on the DV that is explained by the mediator

Significance testing computed using bootstrapping procedures. Bolded text indicates significant mediation models.