TY  - JOUR
PY  - 2020//
TI  - Predicting suicidal behavior without asking about suicidal ideation: machine learning and the role of borderline personality disorder criteria
JO  - Suicide and life-threatening behavior
A1  - Horvath, Adam
A1  - Dras, Mark
A1  - Lai, Catie C. W.
A1  - Boag, Simon
SP  - ePub
EP  - ePub
VL  - ePub
IS  - ePub
N2  - OBJECTIVE: Identifying predictors contributing to suicide risk could help prevent suicides via targeted interventions. However, using only known risk factors may not yield accurate enough results. Furthermore, risk models typically rely on suicidal ideation, even though people often withhold this information.     METHOD: This study examined the contribution of various predictors to the accuracy of six machine learning models for identifying suicidal behavior in a prison population (n = 353), including borderline personality disorder (BPD) and antisocial personality disorder (APD) criteria, and compared how excluding data about suicidal ideation affects accuracy.     RESULTS: Results revealed that gradient tree boosting accurately identified individuals with suicidal behavior, even without relying on questions about suicidal ideation (AUC = 0.875, F1 = 0.846). Furthermore, the model maintained this accuracy with only 29 predictors. Meeting five or more diagnostic criteria of BPD was an important risk factor for suicidal behavior. APD criteria, in the presence of other predictors, did not substantially improve accuracy. Additionally, it may be possible to implement a decision tree model to assess individuals at risk of suicide, without focusing upon suicidal ideation.     CONCLUSIONS: These findings highlight that modern classification algorithms do not necessarily require information about suicidal ideation for modeling suicide and self-harm behavior.<p />  <p>Language: en</p>
LA  - en
SN  - 0363-0234
UR  - http://dx.doi.org/10.1111/sltb.12719
ID  - ref1
ER  -