title: Temporal changes in the prevalence of disordered eating behaviors among adolescents living in the metropolitan area of Rio de Janeiro, Brazil.
abstract: To investigate temporal changes in the prevalence of disordered eating behaviors among adolescents, and their association with socio demographic factors and overweight. Using probability sampling, two population-based cross-sectional surveys were conducted: one in 2005 (n=511) and the other in 2010 (n=314). The frequency of disordered eating behaviors (binge eating, strict dieting or fasting and compensatory behaviors) was investigated using a self-administered questionnaire. The presence of binge eating increased by 18.4% in the 5 years between the two surveys. In 2005, girls were 1.95 times more likely to engage in strict dieting or fasting than boys, and this difference increased to 7.02 times in 2010. Overweight adolescents were 2.29 times more likely to undertake strict dieting than non-overweight adolescents in 2005 and 3.65 times more likely to do so in 2010. No significant associations were found for compensatory behaviors. A pronounced increase in the prevalence of binge eating was observed, and girls and overweight adolescents were more likely to engage in strict dieting or fasting.
authors.affiliation: Department of Nutrition Josué de Castro, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil. Electronic address: dias.danilo@hotmail.com.
authors.forename: Danilo Dias
authors.initials: DD
authors.lastname: Santana
authors.affiliation: Department of Nutrition Josué de Castro, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Erica Guimarães
authors.initials: EG
authors.lastname: Barros
authors.affiliation: Department of Nutrition Josué de Castro, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Rosana Salles da
authors.initials: RSD
authors.lastname: Costa
authors.affiliation: Department of Nutrition Josué de Castro, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Gloria Valeria
authors.initials: GV
authors.lastname: da Veiga
mesh_terms: D000293:Adolescent; D001938:Brazil / Q000453:epidemiology; D002032:Bulimia / Q000453:epidemiology* / Q000523:psychology; D002648:Child; D003430:Cross-Sectional Studies; D005215:Fasting; D005247:Feeding Behavior; D001068:Feeding and Eating Disorders / Q000453:epidemiology* / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D063766:Pediatric Obesity / Q000453:epidemiology / Q000523:psychology; D015995:Prevalence; D012307:Risk Factors; D011795:Surveys and Questionnaires; D013997:Time Factors
keywords: Binge eating; Compensatory behaviors; Fasting; Low socioeconomic status; Strict dieting