Table 3 Confirmatory factor analysis factor models of the Korean version of the COVID-related-PTSD (K-COVID-related-PTSD)

1. Disturbing memories of the experience

1

1

1

1

2. Disturbing dreams of the experience

1

1

1

1

3. Suddenly feeling as if the stressful experience was actually happening again

1

1

1

1

4. Upset when reminded of stressful experience

1

1

1

1

5. Physical reactions to reminders of the experience

1

1

1

1

6. Avoiding memories, thoughts, or feelings related to experience

1

2

2

2

7. Avoiding external reminders of the stressful experience

1

2

2

2

8. Trouble remembering the experience

1

3

3

3

9. Negative beliefs of self, other people, and the world

1

3

3

3

10. Blaming self or others for the experience

1

3

3

3

11. Having strong negative feelings such as fear, horror, anger, guilt, or shame

1

3

3

3

12. Loss of interest in activities

1

3

4

4

13. Feeling distant or cut-off from other people

1

3

4

4

14. Trouble experiencing positive feelings

1

3

4

4

15. Irritability, angry outbursts, or acting aggressively

1

4

6

5

16. Taking too many risks or doing things that could cause you harm

1

4

6

5

17. Being superalert, watchful, or on guard

1

4

5

6

18. Feeling jumpy or easily started

1

4

5

6

19. Having difficulty concentrating

1

4

6

7

20. Trouble falling or staying asleep

1

4

6

7

χ² (df)

4866.417 (170)

1737.874 (155)

CFI

0.818

0.939

TLI

0.796

0.925

SRMR

0.066

0.035

RMSEA

0.139

0.084

AIC

67,047.512

63,948.969

BIC

67,363.605

64,344.086