Publications by authors named "Yossi Harel"

Objectives: We sought to (1) compare estimates of the prevalence of fighting and weapon carrying among adolescent boys and girls in North American and European countries and (2) assess in adolescents from a subgroup of these countries comparative rates of weapon carrying and characteristics of fighting and injury outcomes, with a determination of the association between these indicators of violence and the occurrence of medically treated injury.

Design And Setting: Cross-sectional self-report surveys using 120 questions were obtained from nationally representative samples of 161082 students in 35 countries. In addition, optional factors were assessed within individual countries: characteristics of fighting (9 countries); characteristics of weapon carrying (7 countries); and medically treated injury (8 countries).

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This study examined the co-morbidity of substance use and violence among a representative sample of 8,394 6th-10th grade Israeli students. A representative national self report sample of 8,394 students in 6th through 10th grade. Measures included smoking, alcohol consumption, and illicit drug use, predicting involvement in bullying, injury during a fight and weapon-carrying in the past 30 days.

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Background: Violent behavior among adolescents is a significant problem worldwide, and a cross-national comparison of adolescent violent behaviors can provide information about the development and pattern of physical violence in young adolescents.

Objectives: To determine and compare frequencies of adolescent violence-related behaviors in 5 countries and to examine associations between violence-related behaviors and potential explanatory characteristics.

Design, Setting, And Participants: Cross-sectional, school-based nationally representative survey at ages 11.

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This study explored the relative importance of family, peers and school in predicting youth violence. The analysis was done on a nationally representative sample included 8,394 students from grade 6th-10th in Israel. Measures of youth violence included bullying, physical fights and weapon carrying.

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Background: Multiple risk behavior plays an important role in the social etiology of youth injury, yet the consistency of this observation has not been examined multinationally.

Objective: To examine reports from young people in 12 countries, by country, age group, sex, and injury type, to quantify the strength and consistency of this association.

Setting: World Health Organization collaborative cross-national survey of health behavior in school-aged children.

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