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Item difficulty and item discrimination values from Item Response Theory analysis of AW sub-criteria
| Past Year Subcriteria and Withdrawal Criterion | Item Difficulty | Item Discrimination |
|---|---|---|
| Insomnia | 2.133 | 2.479 |
| Tremulousness | 2.382 | 3.619 |
| Anxiety | 2.236 | 4.236 |
| Nausea | 1.730 | 2.180 |
| Restlessness | 2.030 | 3.732 |
| Autonomic hyperactivity | 2.140 | 3.242 |
| Hallucinations | 3.100 | 2.679 |
| Seizures | 4.219 | 2.148 |
