Table 2

Summary of models used as clinical decision rules to predict patients at high risk of repeated self-harm

ModelNo. of factorsFactors usedMethod used to predict risk/how factors were selected
Manchester Self-Harm Rule4History of self-harm, previous psychiatric treatment, benzodiazepine used in the attempt, current psychiatric treatmentPragmatic: patients with one or more factors with yes are classified as having a high risk of repetition
Using some 50 explanatory variables considered recursive partitioning analyses were conducted, giving this model the best performance
SoS-99Antidepressant treatment, previous DSH, psychiatric contact, gender, young children, self-injury operated, pension, marital status, housing statusLogistic regression: each patient is assigned an estimated risk of repetition
Factors that showed a significant adjusted association and/or discrimination with repetition
SoS-44Antidepressant treatment, previous DSH, psychiatric contact, genderLogistic regression
The factors are chosen by a classification tree from the nine possible factors in SoS-9
  • DSH, deliberate self-harm; SoS, Södersjukhuset Self-Harm Rule.