"Teens can be the victim of face-to-face bullying in school, electronic bullying outside of the classroom and dating violence," said Andrew Adesman, senior investigator of three studies on bullying presented at the Pediatric Academic Societies meeting in San Diego.
"Each of these experiences are associated with a range of serious adverse consequences," Adesman said.
All three studies were based on data collected by the US Centers for Disease Control & Prevention (CDC) as part of its 2013 Youth Risk Behavior Surveillance System - a biannual questionnaire of teens in grades 9-12 in all 50 states that is constructed to provide a representative sample of high school students in the US.
Moreover, these risks were additive among teens who were the victim of both forms of bullying.
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Tammy Pham, the principal investigator, said it was very important to create more effective strategies to prevent bullying in all forms.
"Tragically, teens who were victimised in more than one way were especially likely to carry a weapon to school or skip school altogether," said Adesman, chief of developmental and behavioural pediatrics at Cohen Children's Medical Center in New Hyde Park.
Alexis Tchaconas, the principal investigator of this study, said that bullying and dating violence were more common than many might expect.
The third study on bullying focused on teens who were victims of bullying in the past 12 months and investigated whether there are gender differences in the association of carrying a weapon to school.
On the other hand, girls who were the victims of bullying were more than three times as likely to carry a weapon as girls who were not victimised; by contrast, male victims were less than twice as likely to carry a weapon compared to male non-victims.
"The prevalence of school bullying has serious implications for the safety of all students - both the victims of bullying and the non-victims," said Pham, the principal investigator of this study.