title: [The application of trajectory model in epidemiological research].
abstract: This article introduced the application of trajectory model in epidemiological study on fat development in sixty teenagers. Results showed that fat developing trend on three trajectories-normal fat group, high fat group and very high fat group, with independently different developing trend. Trajectory model seemed a suitable model for fitting the longitudinal data with heterogeneity.
authors.affiliation: National Center for Public Health Surveillance and Information Services, Chinese Center for Disease Control and Prevention, Beijing 102206, China. Email: glxfgsh@163.com.
authors.forename: Guoshuang
authors.initials: G
authors.lastname: Feng
authors.affiliation: National Center for Public Health Surveillance and Information Services, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
authors.forename: Shicheng
authors.initials: S
authors.lastname: Yu
authors.affiliation: National Center for Public Health Surveillance and Information Services, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
authors.forename: Yuehua
authors.initials: Y
authors.lastname: Hu
mesh_terms: D000273:Adipose Tissue / Q000254:growth & development*; D000293:Adolescent; D002648:Child; D016021:Epidemiologic Studies; D005260:Female; D006801:Humans; D015233:Models, Statistical