Salman Khazaei - PhD Candidate, Department of Epidemiology, School of Public Health, Hamedan University of Medical Sciences, Hamedan, Iran
Abdollah Mohammadian-Hafshejani - PhD Candidate, Department of Epidemiology and Biostatistics, School of Public Health, Isfahan University of Medical Sciences, Isfahan AND Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences,
Parivash Nooraliey - Deputy of Health, Hamedan University of Medical Sciences, Hamedan, Iran
Mohammad Keshvari-Delavar - School of Public Health, Hamedan University of Medical Sciences, Hamedan, Iran
Mahin Ghafari - Assistant Professor, Social Determinants of Health Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran
Ali Pourmoghaddas - Professor, Cardiac Rehabilitation Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
Erfan Ayubi - PhD Candidate, Department of Epidemiology, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Kamyar Mansori - Social Development and Health Promotion Research Center, Gonabad University of Medical Sciences, Gonabad, Iran
Behzad Gholamaliee - Department of Health Education, School of Public Health, Hamedan University of Medical Sciences, Hamedan, Iran
Nizal Sarrafzadegan - Professor, Isfahan Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran

BACKGROUND: Obesity is considered as a major health problem of children and adolescents. The present meta-analysis was conducted by extensive search of studies on the prevalence of obesity among school-aged children and youth aged ۶-۱۸ years in Iran. METHODS: All conducted cross-sectional studies on the prevalence of obesity in Iranian students in all grades were extracted, without applying any restriction on time in national and international databases including Magiran, Iranmedex, SID, Scopus, Google Scholar, and PubMed. Statistical software Stata ۱۲ was used to analyze the data and to obtain the prevalence of obesity among Iranian students. The heterogeneity between the results was determined using statistical test I۲. RESULTS: In this meta-analysis, ۵۱ papers met our inclusion criteria and were therefore considered for the analysis. The prevalence of obesity was equal to ۵.۸۲% [۹۵% confidence interval (CI): ۵-۶.۶۶] in Iranian students. The prevalence of obesity was higher in boys than in girls (۶.۸۵% compared to ۵.۱۳%) (P = ۰.۳۰۰). The highest prevalence of obesity was related to students living in the North and Northwest areas with ۷.۰۷% (۹۵% CI: ۴.۳۵-۹.۷۸). CONCLUSION: The prevalence of obesity among Iranian students is not high when compared to Western countries. However, due to lifestyle changes in recent years, it is necessary to plan intervention programs within families and schools to improve dietary patterns and physical activity of this age group. 

Prevalence, Obesity, Meta-Analysis, Student, Iran