Department of Epidemiology and Biostatistics School of Public Health Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China;
Institute for Health Education Shandong Provincial Center for Disease Control and Prevention Jinan 250000 China;
Center for Health Education The Ministry of Health of the People''s Republic of China Beijing 100011 China;
weight perception; children and adolescents; obesity; lifestyle behavior pattern; latent class analysis;