Comparative analysis of short-term outcomes after bariatric surgery between two disparate populations
ABSTRACT Risk adjustment is a critically important aspect of outcomes research. Racial, geographic, cultural, and socioeconomic differences are nonclinical parameters that can affect clinical outcomes measurement after gastric bypass surgery.
A single surgeon's experience with 217 consecutive laparoscopic gastric bypass patients in private practice in Southern California was compared with the same surgeon's experience with 124 consecutive patients in an academic institution in Philadelphia.
Of the Southern California and Philadelphia groups, 89%, 1%, 9%, and 1% and 55%, 38%, 6%, and 0% were white, black, Hispanic, and Asian, respectively. The average number of co-morbidities was 7.8 in the Southern California group versus 14.4 in the Philadelphia group (P <.001). The 60-day readmission to the hospital rate and emergency room admission rate was 1.4% versus 10.4% and 1.4% versus 18.5%. The insurer mix of private pay, private insurer, and federally funded insurer was 20%, 80%, and 0% in the Southern California group and 0.8%, 71%, and 28% in the Philadelphia group, respectively. Multivariate logistic regression analysis found Medicaid status and practice location independently predicted for the 60-day readmission rate (odds ratio [OR] 3.7, P = .04 and OR 5.6, P = .04, respectively) and a return to the emergency room (OR 3.2, P = .03 and OR 16.3, P <.001). Race, income, and the presence of diabetes were not independent predictors. Variables with nonsignificant differences between the Southern California and Philadelphia cohorts included average age, average body mass index, and major complications (return to surgery and intensive care unit admissions).
The results of this study have shown that in comparing and predicting the outcomes after bariatric surgery, adjustment for demographic and insurance variables might be necessary to improve accuracy.
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ABSTRACT: Laparoscopic adjustable gastric banding (LAGB) is a proven method for achieving long-term weight loss, but there has been controversy regarding how pay status impacts outcomes after surgery.Surgical laparoscopy, endoscopy & percutaneous techniques 10/2014; 24(5):457-460. DOI:10.1097/SLE.0b013e31829cec47 · 0.94 Impact Factor
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ABSTRACT: Patients with Medicaid are much less likely to undergo bariatric surgery compared to those with commercial insurance. The aims of this study were to compare outcomes after laparoscopic Roux-en-Y gastric bypass (LRYGB) for patients covered by Medicaid, other (non-Medicaid) government insurance, and commercial insurance.Obesity Surgery 07/2014; 25(2). DOI:10.1007/s11695-014-1367-y · 3.74 Impact Factor
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ABSTRACT: Social deprivation is associated with a greater morbidity and shorter life expectancy. This study evaluates differences in weight loss following bariatric surgery and deprivation, based on UK deprivation measures in a London bariatric centre. All patients undergoing bariatric surgery between 2002 and 2012 were retrospectively identified. Demographic details, type of surgery and percentage excess weight loss data were collected. UK Index of Multiple Deprivation (IMD, 2010) and IMD domain of the Health Deprivation and Disability (HDD) scores were used to assess deprivation (where 1 is the most deprived in rank order and 32,482 is the least deprived). Two-way between-subjects analysis of variance (ANOVA) was performed to examine the effect of IMD score, deprivation, procedure type and gender on percentage excess weight loss. Data were included from 983 patients (178 male, 805 female) involving 3,663 patient episodes. Treatments comprised laparoscopic gastric bands (n = 533), gastric bypass (n = 362) and gastric balloons (n = 88). The average percentage excess weight loss across all procedures was 38 % over a follow-up period (3 months-9 years). There was no correlation between weight loss and IMD/HDD rank scores. Gastric bypass was significantly more effective at achieving weight loss than the other two procedures at 3-, 6- and 9-month and 1-year follow-up. Social deprivation does not influence weight loss after bariatric surgery, suggesting that all socioeconomic groups may equally benefit from surgical intervention. Social deprivation should not therefore negatively influence the decision for surgical intervention in these patients.Obesity Surgery 05/2014; 24(12). DOI:10.1007/s11695-014-1290-2 · 3.74 Impact Factor