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Bariatric surgery is associated with improved health for severely obese individuals, including substantial weight loss and resolution of certain medical comorbidities. Some studies involving predominately young women with minor comorbid illnesses have also shown both short-term and medium-term mortality benefits of bariatric surgery. However, debate remains regarding the sustainability of health benefits and generalisability to select populations, including US veterans.
This study compared all-cause mortality rates for severely obese US veterans undergoing bariatric surgery between 2000 and 2011 to propensity score matched controls. Matching was based on age, sex, race, body mass index, diabetes status and geographic region. The authors used survival models (Kaplan-Meier and Cox) to compare groups up to a maximum …