| Study | Reason for exclusion |
|---|---|
| Singh 1981 | Allocation: random implied but not stated. Participants: people considered to have schizophrenia, however not selected for persistently aggressive behaviour. |
| Volavka 2002 | Allocation: random. Participants: people with schizophrenia/schizoaffective disorder, however not selected for persistently aggressive behaviour, although aggression was an outcome of interest. |
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