Study objective: To determine how often adolescent and young adult Vic
tims of assaultive injury are offenders in assaults and other crimes.
Design: Comparison of 10- to 24-year-old males treated in the accident
and emergency department for assault-related injuries to similar-aged
males treated in the same department for unintentional injuries. Poli
ce records were searched on both groups for warnings or convictions. S
etting: Accident and emergency department of the Cardiff Royal Infirma
ry. Results: Assault patients were significantly more likely to be for
mally warned or convicted, and they had a higher mean number of warnin
gs or convictions per 100 person-years of exposure, than other injury
patients. These differences were most pronounced for the younger patie
nts and for the year following the injury. Conclusion: These results s
uggest that many young male assault patients either have a history of
criminal activity or develop criminal behavior subsequent to their ass
ault and may benefit from appropriate intervention aimed at interrupti
ng the cycle of crime and violence.