Table 2.

Fisher Partial Correlations between BRS and Actigraphy Sleep Parameters (controlling age, BMI, and Cardiac-affecting Medications)

	BRS		Difference Statistic
	PTSD (n = 28)	Controls (n= 17)	Z
Time in bed	−.15	−.21	< 1.00
Total sleep time	.02	−.36	−1.26
WASOa	−.45	−.10	1.16
WASO %	−.42	.23	−2.16*
Sleep efficiency (%)	.24	−.30	−1.80
Sleep onset latency	.10	.27	< 1.00
Fragmentation index	−.38	.35	2.44*

^*p <.05,

^aWake after sleep onset