Yash S Khandwala1,2, In Gab Jeong1,3, Jae Heon Kim1, Deok Hyun Han1, Shufeng Li4, Ye Wang5, Steven L Chang6, Benjamin I Chung1. 1. 1 Department of Urology, Stanford University Medical Center , Stanford, California. 2. 2 San Diego School of Medicine, University of California , San Diego, California. 3. 3 Department of Urology, Asan Medical Center, University of Ulsan College of Medicine , Seoul, Korea. 4. 4 Department of Urology and Dermatology, Stanford University Medical Center , Stanford, California. 5. 5 Center for Surgery and Public Health, Brigham and Women's Hospital , Boston, Massachusetts. 6. 6 Division of Urology, Brigham and Women's Hospital , Harvard Medical School, Boston, Massachusetts.
Abstract
INTRODUCTION: Little is known about the impact of surgeon volume on the success of the robot-assisted partial nephrectomy (RAPN). The objective of this study was to compare the perioperative outcomes and cost related to RAPN by annual surgeon volumes. PATIENTS AND METHODS: Using the Premier Hospital Database, we retrospectively analyzed 39,773 patients who underwent RAPN between 2003 and 2015 in the United States. Surgeons for each index case were grouped into quintiles for each respective year. Outcomes were 90-day postoperative complications, operating room time (ORT), blood transfusion, length of stay, and direct hospital costs. Logistic regression and generalized linear models were used to identify factors predicting complications and cost. RESULTS: After accounting for patient and hospital demographics, high- and very high-volume surgeons had 40% and 42% decreased odds of having major complications (p = 0.045 and p = 0.027, respectively). Surgeons with higher volumes were associated with fewer odds of prolonged ORT (0.68 for low, 0.72 for intermediate, 0.56 for high, 0.44 for very high volume, all p < 0.05) and length of hospital stay (0.67 for intermediate, 0.51 for high, 0.45 for very high volume, all p < 0.01) compared with very low-volume surgeons. The 90-day hospital cost was also significantly lower for the surgeons with higher volume, but the statistical significance diminished after consideration of hospital clustering. CONCLUSION: Surgeons with very high RAPN volumes were found to have superior perioperative outcomes. Although cost of care appeared to correlate with surgeon volume, there may be other more influential factors predicting cost.
INTRODUCTION: Little is known about the impact of surgeon volume on the success of the robot-assisted partial nephrectomy (RAPN). The objective of this study was to compare the perioperative outcomes and cost related to RAPN by annual surgeon volumes. PATIENTS AND METHODS: Using the Premier Hospital Database, we retrospectively analyzed 39,773 patients who underwent RAPN between 2003 and 2015 in the United States. Surgeons for each index case were grouped into quintiles for each respective year. Outcomes were 90-day postoperative complications, operating room time (ORT), blood transfusion, length of stay, and direct hospital costs. Logistic regression and generalized linear models were used to identify factors predicting complications and cost. RESULTS: After accounting for patient and hospital demographics, high- and very high-volume surgeons had 40% and 42% decreased odds of having major complications (p = 0.045 and p = 0.027, respectively). Surgeons with higher volumes were associated with fewer odds of prolonged ORT (0.68 for low, 0.72 for intermediate, 0.56 for high, 0.44 for very high volume, all p < 0.05) and length of hospital stay (0.67 for intermediate, 0.51 for high, 0.45 for very high volume, all p < 0.01) compared with very low-volume surgeons. The 90-day hospital cost was also significantly lower for the surgeons with higher volume, but the statistical significance diminished after consideration of hospital clustering. CONCLUSION: Surgeons with very high RAPN volumes were found to have superior perioperative outcomes. Although cost of care appeared to correlate with surgeon volume, there may be other more influential factors predicting cost.
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