Introduction: We sought to analyze temporal trends in the utilization of minimally invasive vs open adrenalectomy in the United States; to assess costs, perioperative outcomes, and the determining factors influencing these variables.
Methods: A retrospective analysis of claims data obtained from PearlDiver Mariner, a Health Insurance Portability and Accountability Act-compliant deidentified nationwide database of insurance billing records, was performed. Per-population utilization rates and trends were analyzed using negative binomial regression and trends tests respectively. Continuous and categorical variables were compared using 2-sided t tests and χ2 tests. Multivariable logistic regression analysis was conducted to identify predictors of perioperative complication.
Results: A total of 10,753 patients were identified (mean age 53.3 ± 16.1 years). Using the 2011 to 2014 time frame as reference, utilization of adrenalectomy decreased over time (incidence rate ratio for 2015-2018: 0.65 [95% CI 0.62-0.68, P < .001]; incidence rate ratio for 2019-2021: 0.39 [95% CI 0.37-0.41, P < .001]). Minimally invasive adrenalectomies increased significantly over time (P < .001). A greater number of adrenalectomies were performed by general surgeons compared with urologists (70.4% vs 29.5%). Complications were not significantly predicted by any surgical specialty. Significant predictors for complication rates were Charlson comorbidity index > 1 (odds ratio [OR] 1.11, 95% CI 1.09-1.13), presence of social determinants of health (OR 1.5, 95% CI 1.18-1.88) and open approach (OR 1.54, 95% CI 1.34-1.77).
Conclusions: The number of adrenalectomies in the United States decreased over the past decade, with a shift towards minimally invasive approach. No difference in outcomes for general surgeons vs urologists can be observed. Social determinants of health are independent predictors of increased rate of complications.
Keywords: adrenalectomy; costs and cost analysis; minimally invasive surgical procedures; social determinants of health.