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Evaluation of a German version of a brief diagnosis questionnaire of symptoms of orthorexia nervosa in patients with mental disorders (Ortho-10).
Eat Weight Disord. 2018 Feb; 23(1):75-85.EW

Abstract

PURPOSE

In recent years, a new term-orthorexia nervosa (ON)-has been introduced in the field of clinical assessment and psychotherapy. Orthorexia nervosa is defined as a fixation on healthy food and a pathological obsession to eat food with more natural, higher quality ingredients. Although instruments to measure ON are available, no study on the psychometric properties of the original developed instrument by Bratman (Orthorexia nervosa: Overcoming the obsession with healthful eating, Broadway Books, New York, 2000) in a large clinical sample exists until now.

METHODS

The study was conducted in a large clinic in Germany. The study sample consisted of N = 1122 inpatients, 70% were female, and the mean age was 41 years (SD = 14 years). The main diagnoses at the end of treatment were affective disorders (46%), followed by eating disorders (13%), anxiety disorders (10%), and personality disorders (10%). The patients filled out several instruments, like the Ortho-10, the 10-item version of the orthorexia nervosa instrument, and other construct-related, disorder-specific and construct-distant instruments.

RESULTS

The exploratory factor analysis revealed a two-factor structure: an eating disorder-specific factor and an orthorexia-nervosa specific factor. The eating disorder factor showed good convergent and discriminative validity in which patients with eating disorders and those without could correctly be classified. However, the orthorexia-nervosa specific factor revealed no informational gain compared to the eating disorder-specific factor in this clinical sample.

CONCLUSIONS

Further investigation is necessary to approach the concept of ON and its sense in clinical samples.

LEVEL OF EVIDENCE

Level II: evidence obtained from well-designed controlled trials without randomization.

Authors+Show Affiliations

Institute of Psychology, Alpen-Adria-Universität Klagenfurt, Universitätsstr. 65-67, 9020, Klagenfurt, Austria. sylke.andreas@uni-wh.de. Department of Medical Psychology, University Clinic Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany. sylke.andreas@uni-wh.de. Department of Psychology, University of Witten, Alfred-Herrhausen-Str. 50, 58448, Witten, Germany. sylke.andreas@uni-wh.de.Medizinisch-Psychosomatische Klinik Bad Bramstedt, Schön-Kliniken, Birkenweg 10, 24576, Bad Bramstedt, Germany.Department of Medical Psychology, University Clinic Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany.Department of Psychosomatic Medicine, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

29294251

Citation

Andreas, Sylke, et al. "Evaluation of a German Version of a Brief Diagnosis Questionnaire of Symptoms of Orthorexia Nervosa in Patients With Mental Disorders (Ortho-10)." Eating and Weight Disorders : EWD, vol. 23, no. 1, 2018, pp. 75-85.
Andreas S, Schedler K, Schulz H, et al. Evaluation of a German version of a brief diagnosis questionnaire of symptoms of orthorexia nervosa in patients with mental disorders (Ortho-10). Eat Weight Disord. 2018;23(1):75-85.
Andreas, S., Schedler, K., Schulz, H., & Nutzinger, D. O. (2018). Evaluation of a German version of a brief diagnosis questionnaire of symptoms of orthorexia nervosa in patients with mental disorders (Ortho-10). Eating and Weight Disorders : EWD, 23(1), 75-85. https://doi.org/10.1007/s40519-017-0473-y
Andreas S, et al. Evaluation of a German Version of a Brief Diagnosis Questionnaire of Symptoms of Orthorexia Nervosa in Patients With Mental Disorders (Ortho-10). Eat Weight Disord. 2018;23(1):75-85. PubMed PMID: 29294251.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evaluation of a German version of a brief diagnosis questionnaire of symptoms of orthorexia nervosa in patients with mental disorders (Ortho-10). AU - Andreas,Sylke, AU - Schedler,Kirsten, AU - Schulz,Holger, AU - Nutzinger,Detlev O, Y1 - 2018/01/02/ PY - 2017/09/01/received PY - 2017/12/12/accepted PY - 2018/1/3/pubmed PY - 2018/8/15/medline PY - 2018/1/3/entrez KW - Clinical sample KW - Orthorexia nervosa KW - Psychometric properties KW - Screening instrument SP - 75 EP - 85 JF - Eating and weight disorders : EWD JO - Eat Weight Disord VL - 23 IS - 1 N2 - PURPOSE: In recent years, a new term-orthorexia nervosa (ON)-has been introduced in the field of clinical assessment and psychotherapy. Orthorexia nervosa is defined as a fixation on healthy food and a pathological obsession to eat food with more natural, higher quality ingredients. Although instruments to measure ON are available, no study on the psychometric properties of the original developed instrument by Bratman (Orthorexia nervosa: Overcoming the obsession with healthful eating, Broadway Books, New York, 2000) in a large clinical sample exists until now. METHODS: The study was conducted in a large clinic in Germany. The study sample consisted of N = 1122 inpatients, 70% were female, and the mean age was 41 years (SD = 14 years). The main diagnoses at the end of treatment were affective disorders (46%), followed by eating disorders (13%), anxiety disorders (10%), and personality disorders (10%). The patients filled out several instruments, like the Ortho-10, the 10-item version of the orthorexia nervosa instrument, and other construct-related, disorder-specific and construct-distant instruments. RESULTS: The exploratory factor analysis revealed a two-factor structure: an eating disorder-specific factor and an orthorexia-nervosa specific factor. The eating disorder factor showed good convergent and discriminative validity in which patients with eating disorders and those without could correctly be classified. However, the orthorexia-nervosa specific factor revealed no informational gain compared to the eating disorder-specific factor in this clinical sample. CONCLUSIONS: Further investigation is necessary to approach the concept of ON and its sense in clinical samples. LEVEL OF EVIDENCE: Level II: evidence obtained from well-designed controlled trials without randomization. SN - 1590-1262 UR - https://www.unboundmedicine.com/medline/citation/29294251/Evaluation_of_a_German_version_of_a_brief_diagnosis_questionnaire_of_symptoms_of_orthorexia_nervosa_in_patients_with_mental_disorders__Ortho_10__ L2 - https://dx.doi.org/10.1007/s40519-017-0473-y DB - PRIME DP - Unbound Medicine ER -