{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,5]],"date-time":"2026-05-05T21:15:18Z","timestamp":1778015718643,"version":"3.51.4"},"reference-count":66,"publisher":"American Academy of Pediatrics (AAP)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2013,1,1]]},"abstract":"<jats:sec><jats:title>BACKGROUND AND OBJECTIVES:<\/jats:title><jats:p>No recent international studies provide evidence about its prevalence, trends, or social determinants of physical fighting in adolescents. We studied cross-national epidemiologic trends over time in the occurrence of frequent physical fighting, demographic variations in reported trends, and national wealth and income inequality as correlates.<\/jats:p><\/jats:sec><jats:sec><jats:title>METHODS:<\/jats:title><jats:p>Cross-sectional surveys were administered in school settings in 2002, 2006, and 2010. Participants (N = 493874) included eligible and consenting students aged 11, 13, and 15 years in sampled schools from 30 mainly European and North American countries. Individual measures included engagement in frequent physical fighting, age, gender, participation in multiple risk behaviors, victimization by bullying, and family affluence. Contextual measures included national income inequality, absolute wealth and homicide rates. Temporal measure was survey cycle (year).<\/jats:p><\/jats:sec><jats:sec><jats:title>RESULTS:<\/jats:title><jats:p>Frequent physical fighting declined over time in 19 (63%) of 30 countries (from descriptive then multiple Poisson regression analyses). Contextual measures of absolute wealth (relative risk 0.96, 95% confidence interval 0.93\u20130.99 per 1 SD increase in gross domestic product per capita) but not income inequality (relative risk 1.01, 95% confidence interval 0.98\u20131.05 per 1 SD increase) related to lower levels of engagement in fighting. Other risk factors identified were male gender, younger age (11 years), multiple risk behaviors, victimization by bullying, and national homicide rates.<\/jats:p><\/jats:sec><jats:sec><jats:title>CONCLUSIONS:<\/jats:title><jats:p>Between 2002 and 2010, adolescent physical fighting declined in most countries. Specific groups of adolescents require targeted violence reduction programs. Possible determinants responsible for the observed declines are discussed.<\/jats:p><\/jats:sec>","DOI":"10.1542\/peds.2012-1614","type":"journal-article","created":{"date-parts":[[2012,12,4]],"date-time":"2012-12-04T08:47:12Z","timestamp":1354610832000},"page":"e18-e26","source":"Crossref","is-referenced-by-count":88,"title":["Trends and Socioeconomic Correlates of Adolescent Physical Fighting in 30 Countries"],"prefix":"10.1542","volume":"131","author":[{"given":"William","family":"Pickett","sequence":"first","affiliation":[{"name":"Departments of Community Health and Epidemiology, and"}]},{"given":"Michal","family":"Molcho","sequence":"additional","affiliation":[{"name":"Centre for Health Promotion, National University of Ireland, Galway, Republic of Ireland;"}]},{"given":"Frank J.","family":"Elgar","sequence":"additional","affiliation":[{"name":"Institute for Health and Social Policy and Douglas Institute, McGill University, Montreal, Canada;"}]},{"given":"Fiona","family":"Brooks","sequence":"additional","affiliation":[{"name":"Centre for Research in Primary and Community Care, University of Hertfordshire, United Kingdom;"}]},{"given":"Margaretha","family":"de Looze","sequence":"additional","affiliation":[{"name":"Department of Child and Adolescent Studies, Faculty of Social and Behavioral Sciences, Utrecht University, Utrecht, Netherlands;"}]},{"given":"Katharina","family":"Rathmann","sequence":"additional","affiliation":[{"name":"Hertie School of Governance, Humboldt University, Berlin, Germany;"}]},{"given":"Tom F.M.","family":"ter Bogt","sequence":"additional","affiliation":[{"name":"Department of Child and Adolescent Studies, Faculty of Social and Behavioral Sciences, Utrecht University, Utrecht, Netherlands;"}]},{"given":"Saoirse","family":"Nic Gabhainn","sequence":"additional","affiliation":[{"name":"Centre for Health Promotion, National University of Ireland, Galway, Republic of Ireland;"}]},{"given":"Dagmar","family":"Sigmundov\u00e1","sequence":"additional","affiliation":[{"name":"Institute of Active Lifestyle, Faculty of Physical Culture, Palacky University in Olomouc, Olomouc, Czech Republic;"}]},{"given":"Margarida","family":"Gaspar de Matos","sequence":"additional","affiliation":[{"name":"Faculdade de Motricidade Humana, Universidade Tecnica de Lisboa, Cruz Quebrada, Portugal;"}]},{"given":"Wendy","family":"Craig","sequence":"additional","affiliation":[{"name":"Psychology, Queen\u2019s University, Kingston, Canada;"}]},{"given":"Sophie D.","family":"Walsh","sequence":"additional","affiliation":[{"name":"International Research Program on Adolescent Well-Being and Health, School of Education, Bar Ilan University, Tel Aviv, Israel; and"}]},{"given":"Yossi","family":"Harel-Fisch","sequence":"additional","affiliation":[{"name":"International Research Program on Adolescent Well-Being and Health, School of Education, Bar Ilan University, Tel Aviv, Israel; and"}]},{"given":"Candace","family":"Currie","sequence":"additional","affiliation":[{"name":"Child and Adolescent Health Research Unit, University of St. Andrews, St. Andrews, United Kingdom"}]}],"member":"417","published-online":{"date-parts":[[2013,1,1]]},"reference":[{"key":"2021120823503850700_B1","doi-asserted-by":"crossref","DOI":"10.1016\/S0140-6736(02)11133-0","volume-title":"World Report on Violence and Health","author":"Krug","year":"2002"},{"issue":"9693","key":"2021120823503850700_B2","doi-asserted-by":"crossref","first-page":"881","DOI":"10.1016\/S0140-6736(09)60741-8","article-title":"Global patterns of mortality in young people: a systematic analysis of population health data.","volume":"374","author":"Patton","year":"2009","journal-title":"Lancet"},{"issue":"3","key":"2021120823503850700_B3","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1515\/IJAMH.2004.16.3.239","article-title":"Substance use and youth violence. 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