title: Prevalence of underweight, overweight and obesity in preschool children of Tehran, Iran.
abstract: BACKGROUND
  It is reported that prevalence of overweight and obesity have increased in all age groups, but little is known about prevalence of overweight and obesity in preschool children. Therefore, the purpose of this study was to survey the prevalence of underweight, overweight and obesity in 3-6 year-old Tehranian children in 2009-2010.
  
  
  METHODS
  This cross-sectional study was performed on a total of 756 (378 boys and 378 girls) preschool children aged 3-6. Subjects were selected through stratified sampling from 5 geographic regions of Tehran (east, west, north, south, and center). Body weight and height were measured directly. Underweight, overweight and obesity was defined as Body Mass Index (BMI) ≤ 5(th) percentile (underweight), 5(th) to 85(th) percentile (normal weight), 85(th) to 95(th) percentile (overweight), and > 95(th) percentile (obesity); based on recommendation of Centers for Disease Control (CDC) in 2000.
  
  
  RESULTS
  Findings showed that the prevalence of underweight, overweight and obesity was 4.77%, 9.81% and 4.77% in boys and 4.77%, 10.31% and 4.49% in girls, respectively.
  
  
  CONCLUSIONS
  Our findings showed a relatively high prevalence of overweight and obesity in Tehranian preschool children that is a serious problem. This result can be used in clinical setting and preventive programs.
authors.affiliation: Faculty of physical education and sport science, University of Tehran, Tehran, Iran.
authors.forename: Abbasali
authors.initials: A
authors.lastname: Gaeini
authors.forename: Majid
authors.initials: M
authors.lastname: Kashef
authors.forename: Ali
authors.initials: A
authors.lastname: Samadi
authors.forename: Aliasghar
authors.initials: A
authors.lastname: Fallahi
references.citation: Pediatrics. 2007 Dec;120 Suppl 4:S254-88
references.pmid: 18055654
references.citation: JAMA. 2010 Jan 20;303(3):242-9
references.pmid: 20071470
references.citation: Am J Clin Nutr. 2008 Feb;87(2):292-4
references.pmid: 18258616
references.citation: Int J Obes Relat Metab Disord. 1995 Jun;19(6):423-30
references.pmid: 7550528
references.citation: Appetite. 2005 Jun;44(3):273-82
references.pmid: 15927729
references.citation: Am J Clin Nutr. 2000 Oct;72(4):1032-9
references.pmid: 11010948
references.citation: Pediatrics. 2005 Feb;115(2):e223-9
references.pmid: 15687430
references.citation: Swiss Med Wkly. 2004 Sep 4;134(35-36):523-8
references.pmid: 15517505
references.citation: MMWR Morb Mortal Wkly Rep. 2009 Jul 24;58(28):769-73
references.pmid: 19629026
references.citation: J Pediatr Gastroenterol Nutr. 1999 Sep;29(3):343-9
references.pmid: 10468003
references.citation: Pediatrics. 2005 Sep;116(3):657-62
references.pmid: 16140705
references.citation: Am J Clin Nutr. 2010 Nov;92(5):1257-64
references.pmid: 20861173
references.citation: J Gynecol Obstet Biol Reprod (Paris). 1996;25(1):61-70
references.pmid: 8901304
references.citation: Obesity (Silver Spring). 2006 May;14(5):765-9
references.pmid: 16855183
references.citation: BMJ. 1999 Oct 16;319(7216):1039
references.pmid: 10521196
references.citation: Am J Clin Nutr. 2007 Jun;85(6):1643-9
references.pmid: 17556704
references.citation: Int J Obes Relat Metab Disord. 2003 Jul;27(7):834-9
references.pmid: 12821970
references.citation: Am J Hum Biol. 2004 Nov-Dec;16(6):670-8
references.pmid: 15495229