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Background: BODY-Q is a rigorously developed patient-reported outcome measure designed to measure outcomes of weight loss and body contouring patients. To allow interpretation and comparison of BODY-Q scores across studies, normative BODY-Q values were generated from the general population. The aim of this study was to examine the psychometric properties of BODY-Q in the normative population.
Methods: Data were collected using two crowdsourcing platforms (Prolific and Amazon Mechanical Turk) in 12 European and North American countries. Rasch measurement theory (RMT) was used to examine reliability and validity of BODY-Q scales.
Results: RMT analysis supported the psychometric properties of BODY-Q in the normative sample with ordered thresholds in all items and nonsignificant chi-square values for 167 of 176 items. Reliability was high with person separation index of greater than or equal to 0.70 in 20 of 22 scales and Cronbach alpha values of greater than or equal to 0.90 in 17 of 22 scales. Mean scale scores measuring appearance, health-related quality of life, and eating-related concerns scales varied as predicted across subgroups with higher scores reported by participants who were more satisfied with their weight. Analysis to explore differential item functioning by sample (normative versus field-test) flagged some potential issues, but subsequent comparison of adjusted and unadjusted person estimates provided evidence that the scoring algorithm worked equivalently for the normative sample as in the field-test samples.
Conclusions: The BODY-Q scales showed acceptable reliability and validity in the normative sample. The normative values can be used as reference in research and clinical practice in combination with local estimates for parallel analysis and comparison.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10653602 | PMC |
http://dx.doi.org/10.1097/GOX.0000000000005401 | DOI Listing |
Surg Endosc
May 2025
Department of Surgery, Brigham and Women's Hospital, Boston, MA, USA.
Objectives: Amid hesitancy to pursue interventions, such as metabolic and bariatric surgery for obesity within some age groups, the impact of age on the relationship between body mass index (BMI) and perceived bodily function is fundamental to understand. Our objective was thus to determine whether this relationship was affected by older age such that it might alter how we consider interventions in different age groups.
Methods: Patient data (N = 1921) were obtained prospectively and assessed to determine if age decile influenced the association between BMI and BODY-Q Physical Function scores; BODY-Q PF is a validated instrument which assesses perceived physical function in patients who are being managed for weight loss.
Plast Surg (Oakv)
May 2024
Division of Plastic Surgery, BC Children's Hospital, Vancouver, BC, Canada.
Ann Surg
June 2024
Research Unit of Plastic Surgery, Odense University Hospital, Odense, Denmark.
Objective: To examine health-related quality of life (HRQL) and satisfaction with appearance in patients who have undergone bariatric surgery (BS) with or without subsequent body contouring surgery (BCS) in relation to the general population normative for the BODY-Q.
Background: The long-term impact of BS with or without BCS has not been established using rigorously developed and validated patient-reported outcome measures. The BODY-Q is a patient-reported outcome measure developed to measure changes in HRQL and satisfaction with appearance in patients with BS and BCS.
Plast Reconstr Surg Glob Open
November 2023
Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada.
Background: BODY-Q is a rigorously developed patient-reported outcome measure designed to measure outcomes of weight loss and body contouring patients. To allow interpretation and comparison of BODY-Q scores across studies, normative BODY-Q values were generated from the general population. The aim of this study was to examine the psychometric properties of BODY-Q in the normative population.
View Article and Find Full Text PDFClin Obes
August 2022
Department of Surgery, Brigham and Women's Hospital, Harvard University, Boston, Massachusetts, USA.
The BODY-Q is a patient-reported outcome measure used to assess outcomes in patients undergoing weight loss and/or body contouring surgery (BC) following massive weight loss. Normative values for the BODY-Q are needed to improve data interpretation and enable comparison. Thus, the aim of this study was to determine normative values for the BODY-Q.
View Article and Find Full Text PDF