title: [Waist-to-height ratio does not change with gender, age and pubertal stage in elementary school children].
abstract: BACKGROUND
  Waist-to-height ratio (WHtR) is a cardiometabolic risk indicator in children. A value greater than or equal to 0.55 is an effective screening tool for identifying obese children with metabolic syndrome. However, it is unclear whether this cutoff can be applied equally to any age or gender.
  
  
  OBJECTIVE
  To analyze the variability of WHtR by age, gender and pubertal stage in elementary school children.
  
  
  METHODS
  Cross-sectional study in 2,980 school children (6-14 years old, 51% male) of Santiago, Chile. We measured weight, height and waist circumference and calculated body mass index and WHtR. Pubertal stage was assessed and classified as peripubertal (Tanner I and II) and pubertal (Tanner III, IV and V).
  
  
  RESULTS
  The mean age was 9.9 ± 2.3 years, with no gender difference (p = 0.5). Eighty one percent of boys and 59.4% of girls were peripubertal (p < 0.001). The association between age-adjusted WHtR by gender and pubertal stage was not significant (p = 0.409). Therefore mean, standard deviation and percentiles of WHtR were calculated without sex and pubertal stage segmentations.
  
  
  CONCLUSIONS
  Since WHtR does not vary with age, gender and pubertal status in elementary school children, it is possible to use a single cutoff value, previously defined in this population, to identify children with cardiometabolic risk.
authors.forename: Pilar
authors.initials: P
authors.lastname: Arnaiz
authors.forename: Francisca
authors.initials: F
authors.lastname: Grob
authors.forename: Gabriel
authors.initials: G
authors.lastname: Cavada
authors.forename: Angélica
authors.initials: A
authors.lastname: Domínguez
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Bancalari
authors.forename: Verónica
authors.initials: V
authors.lastname: Cerda
authors.forename: Juanita
authors.initials: J
authors.lastname: Zamorano
authors.forename: Manuel
authors.initials: M
authors.lastname: Fernández
authors.forename: Hernán
authors.initials: H
authors.lastname: García
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002677:Chile; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D009765:Obesity / Q000175:diagnosis / Q000503:physiopathology*; D011627:Puberty / Q000502:physiology; D012016:Reference Values; D012737:Sex Factors; D012959:Socioeconomic Factors; D065927:Waist-Height Ratio