title: Methodology for the analysis of dietary data from the Mexican National Health and Nutrition Survey 2006.
abstract: OBJECTIVE
  To describe the methodology for the analysis of dietary data from the Mexican National Health and Nutrition Survey 2006 (ENSANUT 2006) carried out in Mexico.
  
  
  METHODS
  Dietary data from the population who participated in the ENSANUT 2006 were collected through a 7-day food-frequency questionnaire. Energy and nutrient intake of each food consumed and adequacy percentage by day were also estimated. Intakes and adequacy percentages > 5 SDs from the energy and nutrient general distribution and observations with energy adequacy percentages < 25% were excluded from the analysis.
  
  
  RESULTS
  Valid dietary data were obtained from 3552 children aged 1 to 4 years, 8716 children aged 5 to 11 years, 8442 adolescents, 15951 adults, and 3357 older adults.
  
  
  CONCLUSIONS
  It is important to detail the methodology for the analysis of dietary data to standardize data cleaning criteria and to be able to compare the results of different studies.
authors.affiliation: Centro de Investigación en Nutrición y Salud, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México.
authors.forename: Sonia
authors.initials: S
authors.lastname: Rodríguez-Ramírez
authors.forename: Verónica
authors.initials: V
authors.lastname: Mundo-Rosas
authors.forename: Alejandra
authors.initials: A
authors.lastname: Jiménez-Aguilar
authors.forename: Teresa
authors.initials: T
authors.lastname: Shamah-Levy
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003627:Data Interpretation, Statistical; D004034:Diet Surveys; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008800:Mexico; D008875:Middle Aged; D009749:Nutrition Surveys; D055815:Young Adult