title: The Brazilian version of the three-factor eating questionnaire-R21: psychometric evaluation and scoring pattern.
abstract: OBJECTIVE
  This study aimed to evaluate the psychometric properties and scoring pattern of the Brazilian version of the three-factor eating questionnaire-r21 (TFEQ-R21).
  
  
  METHODS
  Data were collected from 410 undergraduate students. Confirmatory factor analysis was conducted to examine the factor structure of the TFEQ-R21. Convergent and discriminant validity also was assessed. Cluster analysis was performed to investigate scoring patterns.
  
  
  RESULTS
  In assessing the quality setting, the model was considered satisfactory (χ2/gl = 2.24, CFI = 0.97, TLI = 0.96, RMSEA = 0.05). The instrument was also considered appropriate in relation to the discriminant and convergent validity. There was a positive correlation between body mass index and the dimensions of cognitive restraint (rs= 0.449, p < 0.001) and emotional eating (rs= 0.112, p = 0.023). Using cluster analysis three respondent profiles were identified. The profile "A" was associated with appropriate weight, the "B" was characterized by high scores in cognitive restraint dimension, and the cluster "C" focused individuals who had higher scores on the uncontrolled eating and emotional eating dimensions.
  
  
  CONCLUSIONS
  The Brazilian version of TFEQ-R21 has adequate psychometric properties, and the identified response profiles offer a promising prospect for its use in clinical practice, in weight loss interventions.
authors: Laboratory of Evolution of the Human Behavior, Graduate Program in Psychobiology, Department of Physiology, Federal University of Rio Grande do Norte, Natal, Brazil. annacqm@yahoo.com.br.|Health Sciences College of Trairi/FACISA, Federal University of Rio Grande do Norte, Rua Vila Trairi, s/n, Centro, Santa Cruz, Rio Grande do Norte, 59200-000, Brazil. annacqm@yahoo.com.br.
authors: Anna Cecília Queiroz
authors: http://orcid.org/0000-0002-7664-4959
authors: ACQ
authors: de Medeiros
authors: Laboratory of Evolution of the Human Behavior, Graduate Program in Psychobiology, Department of Physiology, Federal University of Rio Grande do Norte, Natal, Brazil.
authors: Maria Emilia
authors: ME
authors: Yamamoto
authors: Department of Nutrition, Federal University of Rio Grande do Norte, Natal, Brazil.
authors: Lucia Fatima Campos
authors: LFC
authors: Pedrosa
authors: Department of Psychology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
authors: Claudio Simon
authors: CS
authors: Hutz
mesh_terms: D000293:Adolescent; D015992:Body Mass Index; D001835:Body Weight; D001938:Brazil; D004435:Eating / Q000523:psychology*; D004644:Emotions; D005163:Factor Analysis, Statistical; D005247:Feeding Behavior / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D008960:Models, Psychological; D009765:Obesity / Q000523:psychology*; D011594:Psychometrics; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D055815:Young Adult
keywords: BMI; Eating behavior; Psychometrics; Three-factor eating questionnaire