title: Assessment of calcium intake by adolescents.
abstract: OBJECTIVE
  To evaluate the daily calcium intake of adolescents in schools from Chapecó, Santa Catarina, Southern Brazil, to check if calcium intake is in accordance with the Dietary Reference Intakes (DRI), and to investigate variables associated with daily calcium intake.
  
  
  METHODS
  Cross-sectional study approved by the Institutional Review Board and developed in 2010. Students of the 8th grade completed questionnaires with personal data and questions about the calcium-rich foods intake frequency. In order to compare students with adequate (1300mg) or inadequate intake of calcium/day (<1300mg), parametric and nonparametric tests were used.
  
  
  RESULTS
  A total of 214 students with a mean age of 14.3±1.0 years were enrolled. The median daily calcium intake was 540mg (interquartile range - IQ: 312-829mg) and only 25 students (11.7%) had calcium intake within the recommendations of the DRI for age. Soft drink consumption ≥3 times/week was associated with a lower intake of calcium.
  
  
  CONCLUSIONS
  Few students ingested adequate levels of calcium for the age group. It is necessary to develop a program to encourage a greater intake of calcium-rich foods in adolescence.
authors.affiliation: UFRGS, Porto Alegre, RS, Brasil.
authors.forename: Cristiane Franco
authors.initials: CF
authors.lastname: de  Oliveira
authors.affiliation: UFRGS, Porto Alegre, RS, Brasil.
authors.forename: Carla Rosane
authors.initials: CR
authors.lastname: da  Silveira
authors.affiliation: UFRGS, Porto Alegre, RS, Brasil.
authors.forename: Mariur
authors.initials: M
authors.lastname: Beghetto
authors.affiliation: UFRGS, Porto Alegre, RS, Brasil.
authors.forename: Paula Daniel
authors.initials: PD
authors.lastname: de  Mello
authors.affiliation: UFRGS, Porto Alegre, RS, Brasil.
authors.forename: Elza Daniel
authors.initials: ED
authors.lastname: de  Mello
mesh_terms: D000293:Adolescent; D002118:Calcium; D002136:Calcium, Dietary / Q000008:administration & dosage*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D064167:Recommended Dietary Allowances
chemical_list: D002136:Calcium, Dietary; D002118:Calcium