. Author manuscript; available in PMC: 2022 Nov 1.

Published in final edited form as: Behav Sleep Med. 2020 Dec 26;19(6):795–813. doi: 10.1080/15402002.2020.1865356

Table 3.

Multiple regression analyses with sleep domains as outcomes and pre-bedtime indexes as predictors

	β	SE	p-value

Sleep Duration
Bedtime Routine Inconsistency	−.06	.05	.24
Poor Quality Sleep Environments	−.12	.02	.02
Security Positive	.08	9.15	.12
Security Negative	−.03	23.86	.54
Family SES	.09	.003	.08
	F(5,418) = 3.97, p = .001, R² = .03

Sleep Timing
Bedtime Routine Inconsistency	.18	.05	<.001
Poor Quality Sleep Environments	.15	.02	.002
Security Positive	−.14	9.12	.002
Security Negative	.02	23.79	.73
Family SES	−.11	.003	.03
	F(5,418) = 11.30, p < .001, R² = .11

Sleep Variability
Bedtime Routine Inconsistency	.17	.04	<.001
Poor Quality Sleep Environments	.13	.02	.01
Security Positive	−.07	8.71	.14
Security Negative	.10	22.72	.05
Family SES	−.07	.003	.15
	F(5,430) = 7.88, p < .001, R² = .08

Note: SES = socioeconomic status