Table 5.
Performance of different symptom requirements per acute stress models to predict concurrent ratings of impairment (N = 594)
| Model | Cluster | Frequency symptom/diagnosis (%)a | Sensitivity | Specificity | PPV | NPV | % correctly classified | % ASD diagnosis |
|---|---|---|---|---|---|---|---|---|
| Model 1: DSM‐5 | One‐factor: (3+)b | 194 (32.7) | 92.82 | 49.35 | 49.87 | 92.68 | 64.6 | 33.0 |
| Model 1: DSM‐5 | One‐factor: (4+)c | 178 (30.0) | 85.17 | 63.64 | 55.97 | 88.77 | 71.2 | 30.0 |
| Model 1: DSM‐5 | One‐factor: (9+)d | 103 (17.3) | 38.77 | 94.29 | 78.64 | 73.93 | 74.7 | 13.6 |
| Model 3: DSM‐IV | Four factor DSM‐IVe | 103 (17.3) | 37.80 | 93.77 | 76.70 | 73.52 | 74.1 | 13.3 |
ASD, Acute Stress Disorder; NPV, negative predictive value; PPV, positive predictive value.
a
The number of cases meeting the frequency requirement per symptom cluster and diagnosis (i.e. without meeting impairment).
b
3+ symptoms from the DSM‐5 list of 14 symptoms.
c
4+ symptoms from the DSM‐5 list of 14 symptoms.
d
9+ symptoms from the DSM‐5 list of 14 symptoms.
e
3+ symptoms from the dissociation cluster and 1+ symptoms from each of re‐experiencing, avoidance and arousal clusters.