Research shows that gastric banding surgery can be more cost-effective for managing type 2 diabetes in obese individuals than conventional care
Research led by the Centre for Obesity Research and Education (CORE), Monash University, Melbourne
World-first research reveals laparoscopic (keyhole) adjustable gastric banding (LAGB) surgery is more cost-effective than conventional weight loss methods for managing recently diagnosed type 2 diabetes in the obese.1,2
The landmark research, conducted by Monash and Deakin Universities and published in the American Diabetes Association's journal, Diabetes Care, recorded some dramatic findings regarding the potential health benefits and healthcare cost-savings to be gained by substituting LAGB surgery for conventional care (diet, exercise and medication) in managing type 2 diabetes in obese patients.1
According to Associate Professor John Dixon, formerly from the Centre for Obesity Research and Education (CORE) and now at the Baker IDI Heart and Diabetes Institute, Melbourne, the new research demonstrates the cost-effective benefits of LAGB surgery.
"Previously we and other researchers have shown that weight loss following gastric banding surgery improves health, enhances quality of life and saves lives.
"This new research now shows that it is also cost-effective and saves our healthcare system money.
"There are very few treatments today that do all of this," said A Prof Dixon.
"From a strictly cost perspective, (excluding the important quality of life and life expectancy benefits of diabetes remission), our new research presents strong evidence to show that after 10 years, the return on investment of gastric banding surgery is fully recouped through savings in healthcare costs from treating type 2 diabetes," said A Prof Dixon.
Ms Catherine Keating, Study Investigator and Research Fellow, Health Economics Unit, Deakin University said, "Our research shows that it costs less to treat type 2 diabetes early through gastric banding surgery than to allow the same person to live their life with the disease and face ongoing escalating treatment costs.
"Most importantly, these patients could enjoy a dramatic improvement in their quality of life because early treatment using gastric banding surgery results in remission of diabetes for many patients."
The study found that the lifetime healthcare costs were AUD2,400 less per surgical patient compared to conventional care and that these patients were also five times more likely to experience the quality of life and life expectancy benefits of diabetes remission.1,3
"This study only considered the costs of treating type 2 diabetes, but weight loss has many additional benefits which make it even more cost-effective," said Ms Keating.
"So it is of real value to the community as there will be healthier people at less cost."
"It is fairly rare to assess a healthcare intervention that offers both health benefits and saves healthcare costs."
About the research
The Australian research, comprising two health economics studies, followed a group of 60 obese adults living with the increasingly common combination of obesity and recently diagnosed type 2 diabetes during a two year trial. Each patient was randomised to either LAGB surgery or conventional diabetes treatment. The research reported the actual costs and diabetes outcomes over the two year trial and also predicted the costs and diabetes outcomes over a patient's lifetime.1,2
References
1. Keating CL et al. Cost-effectiveness of surgically induced weight loss for the management of type 2 diabetes: modelled lifetime analysis. Diabetes Care 2009 Jan 26. [Epub ahead of print].
2. Keating CL et al. Cost-efficacy of surgically induced weight loss for the management of type 2 diabetes: randomised controlled trial. Diabetes Care 2009 Jan 26. [Epub ahead of print].
3. Dixon JB et al. Adjustable gastric banding and conventional therapy for type 2 diabetes - a randomised controlled trial. JAMA 2008. 299(3): 316-323.
4. Sjostrom et al. Effects of bariatric surgery on mortality in Swedish obese subjects. NEJM 2007. 357:741-752.
5. Diabetes Australia. Diabetes Action, Diabetes Data. Diabetes Australia Canberra 2008.
6. Australian Institute of Health and Welfare 2008. Diabetes: Australian Facts 2008. AIHW Cat. No CVD 40 (Diabetes Series No. 8) Canberra AIHW.
7. Dunstan D et al. The rising prevalence of diabetes and impaired glucose tolerance. The Australian diabetes, obesity and lifestyle study. Diabetes Care 2002. 25(5): 829-834.
8. Colagiuri S et al. DiabCo$t Australia: Assessing the burden of type 2 diabetes in Australia. Diabetes Australia. Canberra, December 2003.
9. Ramsey SD et al. Patient level estimates of the cost of complications in diabetes in a managed-care population. Pharmacoeconomics 1999. 16(3): 285-295.
10. LAP-BAND AP� Adjustable Gastric Banding System with OMNIFORM� Design. Directions for use. Allergan.
11. Dixon AFR et al. Laparoscopic adjustable gastric banding induces prolonged satiety: a randomized blind crossover study. J Clin Endocrinol Metab 2005. 90: 813-819.
12. O'Brien PE et al. treatment of mild to moderate obesity with laparoscopic adjustable gastric banding or an intensive medical program: a randomized trial. Ann Intern Med 2006. 144(9): 625-634.
13. Peeters A et al. Substantial intentional weight loss and mortality in the severely obese. Ann Surg 2007. 246: 1028-1033.
14. Colles SL et al. Hunger control and regular physical activity facilitate weight loss after laparoscopic adjustable gastric banding. Obes Surg 2008. 18: 833-840.
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