The Scale of Suicide Ideation consists of 19 items which can be used to evaluate a patient's suicidal intentions. The scale can be used to identify a patient at significant risk and to monitor a patient's response to interventions over time. The authors are from the Universities of Pennsylvania and Pittsburgh.


The scale consists of 19 items scored from 0 to 2.


scale =

= SUM(points for all 19 items)



• minimum score: 0

• maximum score: 38

• A higher score indicates a greater intention or ideation for suicide.


Item subsets can be used to identify 3 factors associated with suicide risk (Table 4, page 350, scores > 0.50):

• Active suicidal desire (10 items: wish to live, wish to die, reasons, desire for active attempt, passive desire, duration, frequency, attitude toward thoughts, deterrents, reason, expectancy)

• Specific plans (3 items: method planning, method opportunity, actual preparation)

• Passive suicidal desire (3 items: passive suicide desire, sense of capability, deception/concealment)



• inter-rater reliability: 83%

• internal reliability with Cronbach's alpha: 89%

• findings correlate well with other measures of depression


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