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| Methods | Allocation: randomised. Blindess: double‐blind. Duration: Six weeks. Setting: mixed, USA. Design: cross‐over. |
| Participants | Diagnosis: schizophrenia, other psychoses. N = 21. Sex: unclear, awaiting more information. Age: average 54 years. |
| Interventions | 1. Vitamin E (1600 IU/day). N = 10 2. Placebo. N = 11. |
| Outcomes | Leaving the study early. Psychiatric Symptom Assessment Scale. Negative Symptom Rating Scale. |
| Notes |
