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Health Qual Life Outcomes. 2017 Nov 25;15(1):227. doi: 10.1186/s12955-017-0802-x.

Further psychometric validation of the BODY-Q: ability to detect change following bariatric surgery weight gain and loss.

Author information

1
McMaster University, 3N27, 1280 Main Street W, Hamilton, ON, L8N 3Z5, Canada. aklass@mcmaster.ca.
2
Modus Outcomes, Letchworth Garden City, Letchworth, UK.
3
School of Rehabilitation Sciences, Institute of Applied Health Sciences, Room 308, 1400 Main Street West, Hamilton, ON, L8S 1C7, Canada.
4
McMaster University, 3N27, 1280 Main Street W, Hamilton, ON, L8N 3Z5, Canada.
5
Memorial Sloan-Kettering Cancer Center, 1275 York Ave, New York, NY, 10065, USA.

Abstract

BACKGROUND:

Recent systematic reviews have identified that current patient-reported outcome instruments have content limitations when used to measure change following bariatric surgery. The aim of this study was to measure change after bariatric surgery using the BODY-Q, a PRO instrument designed for weight loss and body contouring.

METHODS:

The BODY-Q is composed of 18 independently functioning scales and an obesity-specific symptom checklist that measure appearance, health-related quality of life (HR-QOL) and experience of health-care. The sample for this study included patients who were exploring or seeking bariatric surgery in Hamilton (Canada) at the time of the BODY-Q field-test study and who agreed to further contact from the research team. These patients were invited to complete 12 BODY-Q scales and the symptom checklist between 7 June 2016 and 29 November 2016. Data were collected online (REDCap) and via postal surveys. Clinical change was measured using paired t-tests with effect sizes and standardized response means.

RESULTS:

The survey was completed by 58 of 89 (65%) pre-bariatric participants from the original BODY-Q field-test sample. The non-participants did not differ from participants in terms of age, gender, ethnicity, BMI or initial BODY-Q scale scores. Participants who had undergone bariatric surgery had a mean BMI of 49 (SD = 7) at time 1 and 35 (SD = 7) at time 2. Time since bariatric surgery was on average 2 years (SD = 0.5) (range 0.4 to 3 years). Percentage total weight loss ranged from 12 to 51 (mean 31, SD = 9). The difference in the proportion of patients to report an obesity-specific symptom on the BODY-Q checklist was significantly lower at follow-up for 5 of 10 symptoms. Participants improved on BODY-Q scales measuring appearance (of abdomen, back, body, buttocks, hips/outer thighs, inner thigh), body image and physical function (p < 0.001 on paired t-tests) and social function (p = 0.002 on paired t-test). These changes were associated with moderate to large effect sizes (0.60 to 2.29) and standardized response means (0.47 to 1.35).

CONCLUSIONS:

The BODY-Q provides a set of independently functioning scales that measure issues important to patients who undergo weight loss. BODY-Q scales were responsive to measuring clinical change associated with weight loss 2 years after bariatric surgery.

KEYWORDS:

Appearance; Bariatric surgery; Body-Q; Clinical change; Obesity; Patient-reported outcomes; Quality of life; Responsiveness; Satisfaction

PMID:
29178962
PMCID:
PMC5702178
DOI:
10.1186/s12955-017-0802-x
[Indexed for MEDLINE]
Free PMC Article

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