Table 2.

Difference in Sleep Characteristics and PTSD Severity across Sleep Medication Use Status

	Total Sample		Sleep Medication Users		Non Sleep Medication Users
Measure	M	SD	M	SD	M	SD	t (1,49)
PTSD Severity (no sleep)	70.82	16.48	72.68	16.48	69.04	16.60	0.79
ISI	19.06	5.43	19.16	5.42	18.97	5.54	0.12
PSQI
Global score	13.84	3.48	15.25	3.30	12.49	3.14	3.06**
Global score (minus medication)	12.66	3.21	12.84	3.34	12.49	3.14	0.40
Sleep quality	2.31	0.69	2.32	0.75	2.30	0.63	0.08
Sleep latency	2.31	0.94	2.28	1.06	2.35	0.83	0.25
Sleep duration	2.12	0.75	2.12	0.71	2.13	0.81	0.07
Habitual sleep efficiency	1.75	1.34	1.81	1.33	1.68	1.39	0.32
Sleep disturbances	2.31	0.62	2.32	0.69	2.30	0.56	0.09
Daytime drowsiness	1.85	0.80	2.04	0.68	1.65	0.88	1.18
Daily Diary
TSTDairy	352.78	76.89	359.70	79.21	346.12	75.55	0.63
SOLDairy	35.98	23.10	39.27	27.83	32.81	17.38	1.00
WASODiary	38.53	28.15	45.52	34.89	31.81	17.92	1.78
SEDairy	82.45	8.94	80.84	10.26	84.00	7.33	1.27
Actigraphy
TSTAct	410.56	68.92	415.98	78.22	405.34	59.75	0.55
SOLAct	18.03	11.61	17.81	13.32	18.23	9.95	0.13
WASOAct	45.30	25.42	46.42	28.17	44.23	22.99	0.30
SEAct	89.88	5.80	89.77	6.48	89.98	5.19	0.13

Note: N = 51; PTSD (Posttraumatic Stress Disorder); ISI (Insomnia Severity Index); PSQI (Pittsburgh Sleep Quality Index); SOL (Sleep onset latency in minutes); WASO (Wakening after sleep onset in minutes); TST (Total sleep time in minutes); SE (Sleep Efficiency in minutes)

^*p < 0.05,

^**p < 0.01,

^***p < 0.001