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Table 2 Suicidality event rating definitions

From: Suicidality and divalproex sodium: analysis of controlled studies in multiple indications

Code no. Category C-CASA definition a
1 Completed suicide A self-injurious behavior that resulted in fatality and was associated with at least some intent to die as a result of the act
2 Suicide attempt A potentially self-injurious behavior, associated with at least some intent to die, as a result of the act. Evidence that the individual intended to kill him/herself, at least to some degree, can be explicit or inferred from the behavior or circumstance. A suicide attempt may or may not result in actual injury.
3 Preparatory acts toward imminent suicidal behavior The individual takes steps to injure him or herself, but is stopped by self or others from starting the self-injurious act before the potential for harm has begun
4 Suicidal ideation: passive, active, active with plans, type unknown Passive thoughts about wanting to be dead or active thoughts about killing oneself, not accompanied by preparatory behavior
5 Self-injurious behavior, intent unknown Self-injurious behavior where associated intent to die is unknown and cannot be inferred. The injury or potential for injury is clear, but why the individual engaged in that behavior is unclear.
6 Not enough information: death Insufficient information to determine whether the event involved deliberate suicidal behavior or ideation. There is reason to suspect the possibility of suicidality but not enough to be confident that the event was not something other, such as an accident or psychiatric symptom.
7 Self-injurious behavior, no suicidal intent Self-injurious behavior associated with no intent to die. The behavior is intended purely for other reasons, either to relieve distress (often referred to as 'self-mutilation', for example superficial cuts or scratches, hitting/banging, or burns) or to effect change in others or the environment.
8 Other: accident, death, psychiatric, medical No evidence of any suicidality or deliberate self-injurious behavior associated with the event. The event is characterized as an accidental injury, psychiatric or behavioral symptoms only, or medical symptoms or procedure only.
9 Not enough information: non-death Same as no. 6 above, with the event not resulting in death
  1. aDefinitions from [3]: Posner et al., Am J Psych 2007, 164:1035-1043.
  2. C-CASA = Columbia Classification Algorithm for Suicide Assessment