Table 2.

Correlations (Spearman’s rho) between mean phase difference (MPD) during slow spindles for the Fz–C5 channel pair and the CAPS total and subscale scores.

	Total CAPS	Intrusion (CAPS-B)	Avoidance (CAPS-C)	Hyperarousal (CAPS-D)
Among all participants (n = 78)
Night 1	−0.27*	−0.23*	−0.28*	−0.26*
Night 2	−0.34**	−0.30*	−0.38***	−0.34**
Among PTSD participants (n = 31)
Night 1	−0.14	−0.02	0.00	−0.22
Night 2	−0.25	−0.14	−0.16	−0.33

CAPS, Clinician-Administered PTSD Scale; *p < 0.05; **p < 0.01; ***p < 0.001.