. Author manuscript; available in PMC: 2017 Oct 1.

Published in final edited form as: Physiol Behav. 2016 May 8;164(Pt A):11–18. doi: 10.1016/j.physbeh.2016.05.005

Table 2.

Polysomnography sleep characteristics.

	PTSD (n = 38)		Resilient (n = 33)
	M	SD	M	SD	t (69)
Total sleep time (minutes)	385.9	60.2	372.4	67.9	0.89
Sleep onset latency (minutes)^a	33.7	44.7	39.9	59.9	–0.46
Wake after sleep onset (minutes)^a	31.4	28.7	25.3	31.9	1.30
Sleep efficiency (minutes)	86.4	9.3	86.2	11.7	0.07
N1 (%)	2.2	1.1	2.2	1.6	–0.17
N2 (%)	52.0	8.5	50.7	7.8	0.65
N3 (%)	25.1	9.1	23.4	8.9	0.82
Rapid-eye-movement sleep (%)	20.8	5.7	23.7	4.9	–2.28^*

Note.

Values were square-root transformed before t-tests were performed.

p < 0.05.