title: Increasing risks of becoming obese after 6 years in primary school: comparing the relative risks among some schools in Bangkok, Saraburi and Sakolnakorn.
abstract: The authors carried out a retrospectively study of bodyweights of primary-school children from Grade I to Grade VI in 4 schools from Bangkok, one school from Saraburi and data of school children from a district in Sakolnakorn with a six year follow-up period. In the cohort there were 437 children from Bangkok, 225 children from Saraburi and 633 children from Sakolnakorn. Initial data show that prevalence of obesity at grade I in schools from Bangkok, Saraburi and Sakolnakorn were 16%, 23% and 4%, respectively. However, when these children were in grade VI, the prevalence of obesity increased to 31%, 30% and 9%, respectively. Relative risks of becoming obese at grade VI in children who were overweight and obese at grade I are 3 and 5 fold in Bangkok, 2 and 3 fold in Saraburi, 6 and 12 fold in Sakolnakorn, respectively. The present study shows that prevalence of obesity increased at quite dramatic rates during the primary school period in these study groups.
authors.affiliation: Department of Pediatrics, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand. sipjr@mahidol.ac.th
authors.forename: Pipop
authors.initials: P
authors.lastname: Jirapinyo
authors.forename: Narumoon
authors.initials: N
authors.lastname: Densupsoontorn
authors.forename: Supinya
authors.initials: S
authors.lastname: Kongtragoolpitak
authors.forename: Renu
authors.initials: R
authors.lastname: Wong-Arn
authors.forename: Nuchnoi
authors.initials: N
authors.lastname: Thamonsiri
mesh_terms: D000293:Adolescent; D000367:Age Factors; D015992:Body Mass Index; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D009765:Obesity / Q000453:epidemiology*; D015995:Prevalence; D012189:Retrospective Studies; D012306:Risk; D018570:Risk Assessment; D012307:Risk Factors; D012574:Schools / Q000706:statistics & numerical data*; D013334:Students / Q000706:statistics & numerical data*; D013785:Thailand / Q000453:epidemiology; D013997:Time Factors