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Obesity Surgery

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01-12-2014 | Original Contributions

Cost–Utility Analysis of Gastric Bypass for Severely Obese Patients in Spain

Authors: Iván Castilla, Javier Mar, Cristina Valcárcel-Nazco, Arantzazu Arrospide, Juan M. Ramos-Goñi

Published in: Obesity Surgery | Issue 12/2014

Abstract

Background

To assess the cost–utility of gastric bypass versus usual care for patients with severe obesity in Spain.

Methods

We have implemented a discrete-event simulation model with two branches: one branch involves gastric bypass, thereby reducing patients’ BMI, and another branch where patients do not undergo surgery. The model analyzes the emergence of comorbidities (stroke, coronary obstructive disease, diabetes, and breast cancer) associated with obesity during a lifetime horizon. The selected measure of effectiveness is health-related quality of life. Both costs and effects are discounted at 3 %. A probabilistic sensitivity analysis is also performed using second-order Monte Carlo simulation; acceptability curves for different time horizons were also calculated.

Results

Patients with gastric bypass result in a lifetime increase of 5.63 quality-adjusted life years (QALYs) (18.18 vs. 12.55 QALYs). In addition, because of the reduced spending associated with the treatment of various obesity-related comorbidities, final savings stand at 13,994 €. The total cost of the intervention branch is close to half the cost of the non-intervention branch (17,431 vs. 31,425 €).

Conclusions

Gastric bypass is an intervention that dominates over the option of not intervening when a lifetime horizon is considered.

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Title: Cost–Utility Analysis of Gastric Bypass for Severely Obese Patients in Spain
Authors: Iván Castilla
Javier Mar
Cristina Valcárcel-Nazco
Arantzazu Arrospide
Juan M. Ramos-Goñi
Publication date: 01-12-2014
Publisher: Springer US
Published in: Obesity Surgery / Issue 12/2014
Print ISSN: 0960-8923
Electronic ISSN: 1708-0428
DOI: https://doi.org/10.1007/s11695-014-1304-0

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Cost–Utility Analysis of Gastric Bypass for Severely Obese Patients in Spain

Abstract

Background

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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