Table 2. Main effects of sleep reactivity on endothelial function (smallest analysis N = 315).

	Flow-Mediated Dilation Standardized beta, unstandardized b (standard error), and p-value
Sleep reactivity - Duration	ß=−.01, b=−.01 (.07), p=.886
Average sleep duration	ß=.05, b=.00 (<.01), p=.528
Sleep reactivity - Efficiency		ß=−.17, b=−9.31 (3.54), p=.009*
Average sleep efficiency		ß=.08, b=.03 (.02), p=.198
Sleep reactivity - Awakenings			ß=−.13, b=−2.26 (1.07), p=.036*
Average sleep awakenings			ß=−.01, b=.00 (.01), p=.813
Age	ß=−.03, b=−.04 (.10), p=.678	ß=−.03, b=−.05 (.10), p=.602	ß=−.04, b=−.06 (.10), p=.539
Female at birth	ß=.11, b=.58 (.39), p=.137	ß=.11, b=.57 (.38), p=.136	ß=.11, b=.55 (.38), p=.156
Caregiver education	ß=.05, b=.09 (.10), p=.362	ß=.06, b=.11 (.10), p=.278	ß=.05, b=.09 (.10), p=.390
Pubertal status	ß=−.01, b=−.03 (.26), p=.902	ß=.01, b=.04 (.26), p=.879	ß=.01, b=.05 (.26), p=.860

Note. *p <.05. Sleep reactivity was coded such that higher values indicated shorter duration, lower efficiency, and more awakenings in response to days with higher stress.