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Table 1 Classification of risk assessment levels

From: The psychosis analysis in real-world on a cohort of large-scale patients with schizophrenia

Level 0 None of the following behaviors are consistent with levels 1–5.
Level 1 Verbal threats and shout but no hitting behaviors.
Level 2 Hitting behavior is confined to the home and can be persuaded to stop.
Level 3 Having obvious hitting behaviors which regardless of the occasion and only aim at the property and items, cannot persuaded to stop.
Level 4 Persistent hitting behaviors which regardless of the occasion and target at property or people, cannot be persuaded to stop (including self-injury and suicide).
Level 5 Any act of violence against a person with a weapon, or an act of explosion, arson, etc., whether at home or in public.