University of Tasmania
121560 - An exploratory study of long-term publicly waitlisted bariatric surgery patients’ quality of life.pdf (486.74 kB)

An exploratory study of long-term publicly waitlisted bariatric surgery patients’ quality of life before and 1 year after bariatric surgery, and considerations for healthcare planners

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posted on 2023-05-19, 12:32 authored by Julie CampbellJulie Campbell, Hensher, M, Amanda NeilAmanda Neil, Alison VennAlison Venn, Wilkinson, S, Andrew PalmerAndrew Palmer
Background: Long-term publicly waitlisted bariatric surgery patients typically experience debilitating physical/ psychosocial obesity-related comorbidities that profoundly affect their quality of life.

Objectives: We sought to measure quality-of-life impacts in a study population of severely obese patients who had multiyear waitlist times and then underwent bariatric surgery.

Methods: Participants were recruited opportunistically following a government-funded initiative to provide bariatric surgery to morbidly obese long-term waitlisted patients. Participants self-completed the EQ-5D-5L and AQoL-8D questionnaires pre- and postoperatively. Utility valuations (utilities) and individual/super dimension scores (AQoL- 8D only) were generated.

Results: Participants’ (n = 23) waitlisted time was mean [standard deviation (SD)] 6.5 (2) years, body mass index reduced from 49.3 (9.35) kg/m2 preoperatively to 40.8 (7.01) 1 year postoperatively (p = 0.02). One year utilities revealed clinical improvements (both instruments). AQoL-8D improved significantly from baseline to 1 year, with the change twice that of the EQ-5D-5L [EQ-5D-5L: mean (SD) 0.70 (0.25) to 0.78 (0.25); AQoL-8D: 0.51 (0.24) to 0.67 (0.23), p = 0.04], despite the AQoL-8D’s narrower algorithmic range. EQ-5D-5L utility plateaued from 3 months to 1 year. AQoL-8D 1-year utility improvements were driven by Happiness/ Coping/Self-worth (p <0.05), and the Psychosocial super dimension score almost doubled at 1 year (p <0.05). AQoL-8D revealed a wider dispersion of individual utilities.

Conclusions: Ongoing improvements in psychosocial parameters from 3 months to 1 year post-surgery accounted for improvements in overall utilities measured by the AQoL-8D that were not detected by EQ- 5D-5L. Selection of a sensitive instrument is important to adequately assess changes in quality of life and to accurately reflect changes in quality-adjusted life-years for cost-utility analyses and resource allocation in a public healthcare resource-constrained environment.


National Health & Medical Research Council

Department of Health and Human Services Tasmania

Department of Premier and Cabinet


Publication title

PharmacoEconomics Open






Menzies Institute for Medical Research


Adis International Ltd.

Place of publication

New Zealand

Rights statement

Copyright 2017 The Author(s). Licensed under Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Repository Status

  • Open

Socio-economic Objectives

Evaluation of health outcomes

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