Table 5.
Distributions of DSM-5 PTSD Criterion D and E symptoms among true cases of DSM-5 PTSD depending on whether or not they were detected by the DSM-IV approximations
| Conservative approximation |
Broad approximation |
|||||||
|---|---|---|---|---|---|---|---|---|
| Detected | Not detected | Detected | Not detected | |||||
| % | SE | % | SE | % | SE | % | SE | |
| I. Criterion Da | ||||||||
| 2 | 6.2 | 1.2 | 58.1 | 9.0 | 7.7 | 1.3 | 57.9 | 11.6 |
| 3 | 7.5 | 1.3 | 22.6 | 7.6 | 8.0 | 1.4 | 21.1 | 9.6 |
| 4 | 12.9 | 1.7 | 16.1 | 6.7 | 13.0 | 1.7 | 15.8 | 8.6 |
| 5a | 16.5 | 1.9 | 0.0 | 0.0 | 16.0 | 1.8 | 0.0 | 0.0 |
| 6a | 17.7 | 1.9 | 3.2 | 3.2 | 17.2 | 1.9 | 5.3 | 5.3 |
| 7a | 39.3 | 2.5 | 0.0 | 0.0 | 38.2 | 2.4 | 0.0 | 0.0 |
| Total | 100.0 | -- | 100.0 | -- | 100.0 | -- | 100.0 | -- |
| χ23 | 106.0* | 61.0* | ||||||
| II. Criterion E | ||||||||
| 2 | 5.1 | 1.1 | 12.9 | 6.1 | 5.0 | 1.1 | 21.1 | 9.6 |
| 3 | 9.8 | 1.5 | 12.9 | 6.1 | 9.5 | 1.5 | 21.1 | 9.6 |
| 4 | 13.9 | 1.8 | 29.0 | 8.3 | 14.5 | 1.8 | 26.3 | 10.4 |
| 5 | 28.3 | 2.3 | 29.0 | 8.3 | 28.7 | 2.3 | 21.1 | 9.6 |
| 6 | 42.9 | 2.5 | 16.1 | 6.7 | 42.4 | 2.5 | 10.5 | 7.2 |
| Total | 100.0 | -- | 100.0 | -- | 100.0 | -- | 100.0 | -- |
| χ24 | 12.7* | 17.2* | ||||||
| (n) | (389) | (31) | (401) | (19) | ||||
Abbreviations: PTSD, posttraumatic stress disorder.
*
Significant at the .05 level, two-sided test
a
A single collapsed category was created for 5-7 Criterion D symptoms because no soldiers in the not detected subgroup endorsed exactly 5 or exactly 7 Criterion D symptoms. A three degrees of freedom χ2 test was then used to test for significant differences in the distribution of Criterion D symptoms among those detected and not detected by the approximations.