title: [National Health and Nutrition Survey 2012: design and coverage].
abstract: OBJECTIVE
  To describe the design and population coverage of the National Health and Nutrition Survey 2012 (NHNS 2012).
  
  
  METHODS
  The design of the NHNS 2012 is reported, as a probabilistic population based survey with a multi-stage and stratified sampling, as well as the sample inferential properties, the logistical procedures, and the obtained coverage.
  
  
  RESULTS
  Household response rate for the NHNS 2012 was 87%, completing data from 50,528 households, where 96 031 individual interviews selected by age and 14,104 of ambulatory health services users were also obtained.
  
  
  CONCLUSIONS
  The probabilistic design of the NHNS 2012 as well as its coverage allowed to generate inferences about health and nutrition conditions, health programs coverage, and access to health services. Because of their complex designs, all estimations from the NHNS 2012 must use the survey design: weights, primary sampling units, and stratus variables.
authors.affiliation: Centro de Investigación en Evaluación y Encuestas, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México.
authors.forename: Martín
authors.initials: M
authors.lastname: Romero-Martínez
authors.affiliation: Centro de Investigación en Nutrición, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México.
authors.forename: Teresa
authors.initials: T
authors.lastname: Shamah-Levy
authors.affiliation: Centro de Investigación en Evaluación y Encuestas, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México.
authors.forename: Aurora
authors.initials: A
authors.lastname: Franco-Núñez
authors.affiliation: Centro de Investigación en Nutrición, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México.
authors.forename: Salvador
authors.initials: S
authors.lastname: Villalpando
authors.affiliation: Centro de Investigación en Nutrición, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México.
authors.forename: Lucía
authors.initials: L
authors.lastname: Cuevas-Nasu
authors.affiliation: Centro de Investigación en Evaluación y Encuestas, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México.
authors.forename: Juan Pablo
authors.initials: JP
authors.lastname: Gutiérrez
authors.affiliation: Centro de Investigación en Nutrición, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México.
authors.forename: Juan Ángel
authors.initials: JÁ
authors.lastname: Rivera-Dommarco
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008800:Mexico; D008875:Middle Aged; D009749:Nutrition Surveys / Q000379:methods* / Q000706:statistics & numerical data*; D011795:Surveys and Questionnaires; D055815:Young Adult