Table 1.
Item means and standard deviations for the Impact of Events Scale, frequency and severity versions
| Frequency | Severity | |||
|---|---|---|---|---|
| IES item | Mean | SD | Mean | SD |
| 1. I thought about it when I didn’t mean to. | 2.56 | 1.67 | 2.43 | 1.67 |
| 2. I avoided letting myself get upset when I thought about it or was reminded of it. | 2.69 | 1.74 | 2.20 | 1.68 |
| 3. I tried to remove it from memory. | 2.16 | 1.91 | 2.02 | 1.77 |
| 4. I had trouble falling asleep or staying asleep because of pictures or thoughts about it that came into my mind. | 1.79 | 1.81 | 1.98 | 1.87 |
| 5. I had waves of strong feelings about it. | 2.28 | 1.75 | 2.19 | 1.76 |
| 6. I had dreams about it. | 1.36 | 1.63 | 1.49 | 1.74 |
| 7. I stayed away from reminders of it. | 1.79 | 1.84 | 1.56 | 1.69 |
| 8. I felt as if it hadn’t happened or wasn’t real. | 1.88 | 1.77 | 1.65 | 1.68 |
| 9. I tried not to talk about it. | 2.11 | 1.95 | 1.75 | 1.74 |
| 10. Pictures about it popped into my mind. | 1.90 | 1.68 | 1.77 | 1.75 |
| 11. Other things kept making me think about it. | 2.05 | 1.65 | 1.78 | 1.66 |
| 12. I was aware I still had a lot of feelings about it but I didn’t deal with them. | 1.90 | 1.79 | 1.95 | 1.85 |
| 13. I tried not to think about it. | 2.41 | 1.88 | 1.86 | 1.62 |
| 14. Any reminder brought back feelings about it. | 2.20 | 1.75 | 2.00 | 1.73 |
| 15. My feelings about it were kind of numb. | 2.06 | 1.75 | 1.76 | 1.70 |
| Total score | 31.15 | 17.76 | 28.38 | 20.49 |
The obtained range of values for individual items for both the frequency and distress/bother response options was 0 to 5.
IES, Impact of Events Scale; SD, standard deviation.