Impact of Provider Volume on Outcomes of Patients With Hodgkin Lymphoma

Catherine Ireland, Eric Wiedower, Muhammad Mirza, Melissa Crawley, Alexandria Tran, George Yaghmour, Mike G. Martin

Abstract


Background: While the provider volume-outcome relationship has been established for many complex surgeries and invasive procedures, the provider volume impact on outcomes for Hodgkin lymphoma (HL) is less certain. We hypothesized that high-volume providers (HVPs) may have superior outcomes compared with low-volume providers (LVPs).

Methods: We performed a chart-based, retrospective review of all patients receiving adriamycin, doxorubicin, bleomycin, vinblastine, and dacarbazine (ABVD) for HL at the West Cancer Center from January 2010 to June 2015. Patients were divided into HVP (> 3 inpatient chemotherapy (CT)/month (m)) versus LVP (< 3 CT per m) groups. Of 95 patients identified, 93 received at least one dose of ABVD, 21 treated by HVP and 72 by LVP. Patient characteristics were well balanced between groups.

Results: HVPs were less likely to prescribe dose delays (odds ratio (OR): 0.32; confidence interval (CI): 0.16 - 0.65; P = 0.0007) and to hold doses for afebrile neutropenia (OR: 0.05; CI: 0.00 - 0.85; P = 0.0006). HVP delivered significantly fewer prophylactic growth factors (0% of doses vs. 42%, OR: 0.00; CI < 0.00 - 0.06; P < 0.0001). Both event-free survival (EFS) (HR: 6.68; CI: 1.10 - 7.63; P = 0.0321) and overall survival (OS) (HR: 3.68; CI: 1.11 - 12.22; P = 0.032) were significantly inferior in the patients treated by LVP.

Conclusions: In this study, patients with HL treated by LVP had inferior outcomes compared with those treated by HVP. HVPs were less likely to prescribe dose delays, hold doses for afebrile neutropenia or administer growth factor prophylaxis. These observations need to be confirmed in alternative datasets.




World J Oncol. 2018;9(2):46-49
doi: https://doi.org/10.14740/wjon1093w


Keywords


Hodgkin; Lymphoma; Volume

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