title: Validation of a subjective global assessment questionnaire.
abstract: OBJECTIVE
  To validate the Subjective Global Nutritional Assessment (SGNA) questionnaire for Brazilian children and adolescents.
  
  
  METHODS
  A cross-sectional study with 242 patients, aged 30 days to 13 years, treated in pediatric units of a tertiary hospital with acute illness and minimum hospitalization of 24h. After permission from the authors of the original study, the following criteria were observed to obtain the validation of SGNA instruments: translation and backtranslation, concurrent validity, predictive validity, and inter-observer reliability. The variables studied were age, sex, weight and length at birth, prematurity, and anthropometry (weight, height, body mass index, upper arm circumference, triceps skinfold, and subscapular skinfold). The primary outcome was considered as the need for admission/readmission within 30 days after hospital discharge. Statistical tests used included ANOVA, Kruskal-Wallis, Mann-Whitney, chi-square, and Kappa coefficient.
  
  
  RESULTS
  According to SGNA score, 80% of patients were considered as well nourished, 14.5% moderately malnourished, and 5.4% severely malnourished. Concurrent validity showed a weak correlation between the SGNA and anthropometric measurements (p<0.001). Regarding predictive power, the main outcome associated with SGNA was length of admission/readmission. Secondary outcomes associated included the following: length of stay at the unit after SGNA, weight and length at birth, and prematurity (p<0.05). The interobserver reliability showed good agreement among examiners (Kappa=0.74).
  
  
  CONCLUSIONS
  This study validated the SGNA in this group of hospitalized pediatric patients, ensuring its use in the clinical setting and for research purposes in the Brazilian population.
authors.affiliation: Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil. Electronic address: maiara_carniel@yahoo.com.br.
authors.forename: Maiara Pires
authors.initials: MP
authors.lastname: Carniel
authors.affiliation: Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.
authors.forename: Daniele
authors.initials: D
authors.lastname: Santetti
authors.affiliation: Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.
authors.forename: Juliana Silveira
authors.initials: JS
authors.lastname: Andrade
authors.affiliation: Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil.
authors.forename: Bianca Penteado
authors.initials: BP
authors.lastname: Favero
authors.affiliation: Centro Universitário La Salle (UNILASALLE), Canoas, RS, Brazil.
authors.forename: Tábata
authors.initials: T
authors.lastname: Moschen
authors.affiliation: Centro Universitário Franciscano (UNIFRA), Santa Maria, RS, Brazil.
authors.forename: Paola Almeida
authors.initials: PA
authors.lastname: Campos
authors.affiliation: Department of Pediatrics, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.
authors.forename: Helena Ayako Sueno
authors.initials: HA
authors.lastname: Goldani
authors.affiliation: Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.
authors.forename: Cristina Toscani Leal
authors.initials: CT
authors.lastname: Dornelles
mesh_terms: D000293:Adolescent; D001938:Brazil; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D015596:Nutrition Assessment; D009752:Nutritional Status; D015588:Observer Variation; D011502:Protein-Energy Malnutrition / Q000175:diagnosis*; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires
keywords: Adolescentes; Adolescents; Anthropometry; Antropometria; Avaliação nutricional; Children; Crianças; Estudos de validação; Nutritional assessment; Validation studies