A cluster analysis of purging disorder : validation analyses with eating disorder symptoms, general psychopathology and personality
Krug, Isabel (University of Melbourne)
Granero, Roser (Universitat Autònoma de Barcelona. Departament de Psicobiologia i de Metodologia de les Ciències de la Salut)
Giles, Sarah (University of Melbourne)
Riesco, Nadine (Hospital Universitari de Bellvitge)
Agüera, Zaida (Hospital Universitari de Bellvitge)
Sánchez, Isabel (Hospital Universitari de Bellvitge)
Jiménez-Murcia, Susana (Hospital Universitari de Bellvitge)
Del Pino Gutiérrez, Amparo (Hospital Universitari de Bellvitge)
Codina, Ester (Hospital Universitari de Bellvitge)
Baenas Soto, Isabel Maria (Hospital Universitari de Bellvitge)
Valenciano-Mendoza, Eduardo (Hospital Universitari de Bellvitge)
Menchón Magriñá, José Manuel (Hospital Universitari de Bellvitge)
Fernández Aranda, Fernando (Hospital Universitari de Bellvitge)

Data:	2020
Descripció:	32 pàg.
Resum:	Objectives: To assess the natural grouping of Purging Disorder (PD) patients based on purging symptomatology and to evaluate the derived classes (a) against each other and (b) to a control group on a range of clinical and psychological measures. Method: Participants included 223 PD women consecutively admitted to a tertiary ED treatment centre and 822 controls. Purging behaviours (self-induced vomiting, laxative and diuretic use) were used as indicators, while the EDI-2 (ED symptoms), the SCL-90-R (general psychopathology), and the TCI-R (personality traits) were used as validators. Results: Three distinct PD clusters emerged: Cluster 1 (only self-induced vomiting), Cluster 2 (self-induced vomiting and laxative use) and Cluster 3 (all purging methods). Significant differences between Cluster 1 and Cluster 3 were found for the EDI-2 drive for thinness and perfectionism subscales, and the TCI-persistence scale. All clusters differed significantly from the controls on all the EDI-2 and the SCL-90-R scales, but findings for the TCI-R scales were less consistent. Conclusions: This study adds to a growing literature on the validity and distinctiveness of PD and provides evidence of dimensional symptom differences amongst PD clusters.
Ajuts:	Instituto de Salud Carlos III FISPI17/01167
Nota:	Altres ajuts: We thank CERCA Program/Generalitat de Catalunya for institutional support. This manuscript and research was cofounded by FEDER funds/European Regional Development Fund (ERDF), a way to build Europe. But also, from the SLT006/17/00246 grant, funded by the Department of Health of the Generalitat de Catalunya by the call 'Acció instrumental de programes de recerca orientats en l'àmbit de la recerca i la innovació en salut'.
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Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Classification ; OSFED ; Personality ; Purging disorder ; Severity indicator ; SDG 3 - Good Health and Well-being
Publicat a:	European eating disorders review, Vol. 28, Núm. 6 (2020) , p. 643-656, ISSN 1099-0968

DOI: 10.1002/erv.2769
PMID: 32944981

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