Assessing quality of life in severe obesity: development and psychometric properties of the ORWELL-R

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Camolas, J (Author) Other; Ferreira, A (Author) Other; Mannucci, E (Author) Other; Mascarenhas, M (Author) Other; Carvalho, M (Author) Other; Moreira, Pedro (Author) FCNAUP; do Carmo, I (Author) Other; Santos, O (Author) Other

Journal

Title: Eating and Weight Disorders: Studies on Anorexia Bulimia and Obesity

Vol. 21

Pages: 277-288

ISSN: 1124-4909

Publisher: Palgrave Macmillan

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 4 Citations

Pubmed / Medline

Scientific classification

CORDIS: Health sciences

FOS: Medical and Health sciences

Other information

Authenticus ID: P-00K-GJY

DOI: 10.1007/s40519-015-0222-z

Abstract (EN): Several health-related quality-of-life (HRQoL) dimensions are affected by obesity. Our goal was to characterize the psychometric properties of the ORWELL-R, a new obesity-related quality-of-life instrument for assessing the "individual experience of overweightness". This psychometric assessment included two different samples: one multicenter clinical sample, used for assessing internal consistency, construct validity and temporal reliability; and a community sample (collected through a cross-sectional mailing survey design), used for additional construct validity assessment and model fit confirmation. Overall, 946 persons participated (188 from the clinical sample; 758 from community sample). An alpha coefficient of 0.925 (clinical sample) and 0.934 (community sample) was found. Three subscales were identified (53.2 % of variance): Body environment experience (alpha = 0.875), Illness perception and distress (alpha = 0.864), Physical symptoms (alpha = 0.674). Adequate test-retest reliability has been confirmed (ICC: 0.78 for the overall score). ORWELL-R scores were worse in the clinical sample. Worst HRQoL, as measured by higher ORWELL-R scores, was associated with BMI increases. ORWELL-R scores were associated with IWQOL-Lite and lower scores in happiness. ORWELL-R shows good internal consistency and adequate test-retest reliability. Good construct validity was also observed (for convergent and discriminant validity) and confirmed through confirmatory factor analysis (in both clinical and community samples). Presented data sustain ORWELL-R as a reliable and useful instrument to assess obesity-related QoL, in both research and clinical contexts.

Language: English

Type (Professor's evaluation): Scientific

Notes: <a href="http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS&DestLinkType=FullRecord&KeyUT=000376999100015">Indexado na ISI Web of Science</a> <a href="https://www.ncbi.nlm.nih.gov/pubmed/26429794">Indexado na Pubmed</a> <a href="http://www.scopus.com/record/display.url?eid=2-s2.0-84971265074&origin=inward">Indexado na Scopus</a>

No. of pages: 12