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2016 ; 46
(2
): 303-16
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Predicting non-familial major physical violent crime perpetration in the US Army
from administrative data
#MMPMID26436603
Rosellini AJ
; Monahan J
; Street AE
; Heeringa SG
; Hill ED
; Petukhova M
; Reis BY
; Sampson NA
; Bliese P
; Schoenbaum M
; Stein MB
; Ursano RJ
; Kessler RC
Psychol Med
2016[Jan]; 46
(2
): 303-16
PMID26436603
show ga
BACKGROUND: Although interventions exist to reduce violent crime, optimal
implementation requires accurate targeting. We report the results of an attempt
to develop an actuarial model using machine learning methods to predict future
violent crimes among US Army soldiers. METHOD: A consolidated administrative
database for all 975 057 soldiers in the US Army in 2004-2009 was created in the
Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS). Of
these soldiers, 5771 committed a first founded major physical violent crime
(murder-manslaughter, kidnapping, aggravated arson, aggravated assault, robbery)
over that time period. Temporally prior administrative records measuring
socio-demographic, Army career, criminal justice, medical/pharmacy, and
contextual variables were used to build an actuarial model for these crimes
separately among men and women using machine learning methods (cross-validated
stepwise regression, random forests, penalized regressions). The model was then
validated in an independent 2011-2013 sample. RESULTS: Key predictors were
indicators of disadvantaged social/socioeconomic status, early career stage,
prior crime, and mental disorder treatment. Area under the receiver-operating
characteristic curve was 0.80-0.82 in 2004-2009 and 0.77 in the 2011-2013
validation sample. Of all administratively recorded crimes, 36.2-33.1%
(male-female) were committed by the 5% of soldiers having the highest predicted
risk in 2004-2009 and an even higher proportion (50.5%) in the 2011-2013
validation sample. CONCLUSIONS: Although these results suggest that the models
could be used to target soldiers at high risk of violent crime perpetration for
preventive interventions, final implementation decisions would require further
validation and weighing of predicted effectiveness against intervention costs and
competing risks.
|*Social Class
[MESH]
|Adolescent
[MESH]
|Adult
[MESH]
|Age Factors
[MESH]
|Area Under Curve
[MESH]
|Crime/statistics & numerical data
[MESH]
|Female
[MESH]
|Firesetting Behavior/*epidemiology
[MESH]
|Homicide/*statistics & numerical data
[MESH]
|Humans
[MESH]
|Machine Learning
[MESH]
|Male
[MESH]
|Mental Disorders/*epidemiology/therapy
[MESH]
|Middle Aged
[MESH]
|Military Personnel/*statistics & numerical data
[MESH]