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. Author manuscript; available in PMC: 2023 May 1.
Published in final edited form as: Sleep Med. 2021 Nov 11;93:90–99. doi: 10.1016/j.sleep.2021.11.004

Table 4.

Regressions between presleep conditions and sleep/wake problems.

Environmental
Disruptions
Presleep Worries Presleep Family
Concerns
Presleep Arousal Presleep Somatic
Complaints
B(SE) β B(SE) β B(SE) β B(SE) β B(SE) β
Linear Presleep Conditions
Presleep Condition 1.21(.18) .38*** 1.63(.27) .34*** 1.07(.18) .32*** .27(.04) .35*** 1.63(.30) .31***
R2 21.4% 18.7% 17.6% 19.5% 16.8%
2-way Interactions with Race and SES
Presleep Condition x Race .73(.38) .11* .62(.55) .06 1.06(.37) .16** .20(.09) .13* .48(.63) .04
ΔR2 1.0% 0.3% 2.5% 1.7% 0.1%
Presleep Condition x SES −.11(.10) −.06 .03(.17) .01 −.34(.15) −.14* −.01(.02) −.03 −.39(.19) −.12*
ΔR2 0.5% 0.0% 1.8% 0.0% 1.6%

Note: All regressions control for race, sex, SES, and age which together account for 7.6% of the variance in sleep/wake problems. 0 = White, 1 = Black.

*

p < .05

**

p < .01

***

p < .001.