Table 3. Item descriptive statistics.

	Mean	SD	Item-total correlation	Alpha if item omitted	Skewness	Kurtosis
1 Repeated memories	0.66	1.01	0.73	0.93	1.71	2.37
2 Repeated dreams	0.30	0.76	0.69	0.93	2.92	8.58
3 Reliving experience	0.38	0.79	0.72	0.93	2.46	6.05
4 Upset when reminded	0.36	0.80	0.8	0.93	2.52	6.10
5 Physical reaction when reminded	0.30	0.74	0.74	0.93	2.96	8.86
6 Avoiding memories	0.46	0.90	0.69	0.93	2.24	4.65
7 Avoiding external reminders	0.45	0.95	0.71	0.93	2.27	4.41
8 Trouble remembering	0.85	1.30	0.56	0.94	1.43	0.69
9 Negative beliefs	0.39	0.86	0.70	0.93	2.51	6
10 Blaming yourself	0.44	0.93	0.55	0.93	2.30	4.53
11 Negative feelings	0.46	0.93	0.77	0.93	2.25	4.52
12 Loss of interest	0.73	1.12	0.72	0.93	1.52	1.31
13 Feeling distant	0.49	0.94	0.68	0.93	2.16	4.12
14 Trouble positive feelings	0.46	0.93	0.72	0.93	2.31	4.88
15 Irritable behavior	0.58	0.97	0.68	0.93	1.81	2.56
16 Risk taking	0.19	0.56	0.51	0.93	3.67	15.16
17 Being superalert	0.99	1.22	0.61	0.93	1.12	0.22
18 Feeling jumpy	0.62	0.99	0.75	0.93	1.71	2.39
19 Difficulty concentrating	1.13	1.22	0.70	0.93	0.94	-0.14
20 Trouble sleeping	1.04	1.29	0.62	0.93	1.01	-0.25