Dating after gastric bypass surgery
Fracture risk after bariatric surgery: Roux-en-Y gastric bypass versus adjustable gastric banding. Globally, Roux-en-Y gastric bypass (RYGB) and adjustable gastric banding (AGB) are among the most commonly performed bariatric surgery procedures. Among patients with severe obesity, bariatric surgery is effective at reducing body weight; however, there are potential clinical risks associated with these procedures, such as metabolic bone disease.Results Initially, investigators identified 23,263 patients at least 21 years of age with at least 1 RYGB or AGB procedure code on a date after 1 year of continuous enrollment in the health plan.After applying the eligibility criteria, investigators identified 12,482 patients who had undergone an RYGB procedure and 8922 patients who had undergone an AGB procedure.The claims data provided patient demographic information and longitudinal data on inpatient and outpatient medical claims, procedure claims, and pharmacy claims.Patients with morbid obesity who were at least 21 years of age and had undergone RYGB or AGB were identified for potential inclusion in the study cohort.
Study Design This population-based propensity score-matched cohort study used claims data from 2005 to 2013 from a large US commercial health plan (United Health Care).
Background Over the past 20 years, obesity rates have increased sharply, with an age-adjusted prevalence of 35% among US adults in 2014.
In recent years, the popularity of RYGB has risen while the utilization of AGB has declined.
Following 1:1 propensity score matching, the final cohort consisted of 7516 pairs of RYGB and AGB patients.
Baseline demographics, comorbidities, and healthcare utilization were well balanced within the propensity score-matched cohort; the mean age was 44 years and the majority of patients were female (79%).