Table 4 Item loadings for GPS symptoms

Sometimes things happen to people that are unusually or especially frightening, horrible, or traumatic. In the past month, have you…

 had nightmares about the past traumatic life event(s) you have experienced or thought about the event(s) when you did not want to?

0.28

 tried hard not to think about past traumatic life event(s) or went out of your way to avoid situations that reminded you of the event(s)?

0.48

 been constantly on guard, watchful, or easily startled?

0.50

 felt numb or detached from people, activities, or your surroundings?

0.48

 felt guilty or unable to stop blaming yourself or others for past traumatic life event(s) or any problems the event(s) caused?

0.52

 tended to feel worthless?

0.64

 experienced angry outbursts that you could not control?

0.77

 been feeling nervous, anxious, or on edge?

0.88

 been unable to stop or control worrying?

0.74

 been feeling down, depressed, or hopeless?

0.88

 been experiencing little interest or pleasure in doing things?

0.43

 had any problems falling or staying asleep?

0.22

 tried to intentionally hurt yourself?

0.27

 perceived or experienced the world or other people differently, so that things seem dreamlike, strange or unreal?

0.40

 felt detached or separated from your body (for example, feeling like you are looking down on yourself from above, or like you are an outside observer of your own body)?

0.55

 had any other physical, emotional or social problems that bothered you?

0.63

 tried to reduce tensions by using alcohol, tobacco, drugs or medication?

0.22