Validation of the SCOFF questionnaire for screening of eating disorders among Mexican university students
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To evaluate the criterion validity and diagnostic utility of the SCOFF, a brief eating disorder (ED) screening instrument, in a Mexican sample.
The study was conducted in two phases in 2012. Phase I involved the administration of self-report measures [the SCOFF and the Eating Disorder Inventory-2, (EDI-2)] to 1057 students aged 17–56 years (M age = 21.0, SD = 3.4; 67 % female) from three colleges at the Universidad Autónoma de San Luis Potosí, Mexico. In Phase II, a random subsample of these students (n = 104) participated in the eating disorder examination, a structured interview that yields ED diagnoses. Analyses were conducted to evaluate the SCOFF’s criterion validity by examining (a) correlations between scores on the SCOFF and the EDI-2 and (b) the SCOFF’s ability to differentiate diagnosed ED cases and non-cases.
EDI-2 subscales showed high correlations with the SCOFF scores proving initial evidence of criterion validity. A score of two points on the SCOFF optimized the sensitivity (78 %) and specificity (84 %). With this cutoff, the SCOFF correctly classified over half the cases (PPV = 58 %) and screened out the majority of non-cases (NPV = 93 %) providing further evidence of criterion validity. Analyses were repeated separately for men and women, yielding gender-specific information on the SCOFF’s performance.
Taken as a whole, results indicated that the SCOFF can be a useful tool for identifying Mexican university students who are at risk of eating disorders.
KeywordsEating disorders SCOFF Eating disorder inventory Eating disorder examination Validation Mexico
Manuscript preparation was supported by a Research Travel Grant from the Office of International Programs and Studies at the University of Illinois at Urbana-Champaign (to M. Raffaelli).
Compliance with ethical standards
Conflict of interest
On behalf of all authors, the corresponding author states that there is no conflict of interest
The study was conducted in 2012 with Institutional Review Board approval.
Written informed consent was obtained from all the participants included in this study.
- 1.World Health Organization (2004) Prevention of mental disorders: effective interventions and policy options (summary report). WHO, GenevaGoogle Scholar
- 2.Tish Davidson AM (2008) Eating disorders. In: Longe JL (ed) The gale encyclopedia of diets: a guide to health and nutrition. Detroit, Gale, pp 329–333Google Scholar
- 19.Benjet C, Borges G, Méndez E, Albor Y, Casanova L, Orozco R, Curiel T, Fleiz C, Medina-Mora ME (2015) Eight-year incidence of psychiatric disorders and service use from adolescence to early adulthood: longitudinal follow-up of the Mexican Adolescent Mental Health Survey. Eur Child Adolesc Psychiatry. doi: 10.1007/s00787-015-0721-5 CrossRefPubMedGoogle Scholar
- 21.Gutierrez JP, Rivera-Dommarco J, Shamah-Levy T, Villalpando-Hernandez S, Franco A, Cuevas-Nasu L, Romero-Martinez M, Hernandez-Avila M (2012) Encuesta Nacional de Salud y Nutricion 2012. Resultados Nacionales. Instituto Nacional de Salud Publica, CuernavacaGoogle Scholar
- 25.Garner DM (1991) Eating disorder inventory-2 manual. Psychological Assessment Resources, OdessaGoogle Scholar
- 27.Santoncini CU, Chapela LB, García SC, Romo AC (2006) Validación del “eating disorder inventory” en una muestra de mujeres mexicanas con trastorno de la conducta alimentaria. Salud Ment 29:44–51Google Scholar
- 28.Franco Paredes K, Alvarez Rayón GL, Ramírez Ruelas RE (2011) Instrumentos para trastornos del comportamiento alimentario validados en mujeres mexicanas: una revisión de la literatura. Mex J Eat Disord 2:148–164Google Scholar
- 30.Rodriguez L, Quintana L, Padierna J, Acero A, Muñoz P, Urresti B et al (2003) Revisión de la literatura sobre medidas psicométricas para personas con un trastorno de la alimentación. Clin Health 14:221–243Google Scholar