Patterns of surveillance intensity in kidney cancer
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UROLOGY - ORIGINAL PAPER
Patterns of surveillance intensity in kidney cancer Suzanne B. Merrill1 · Justin Loloi2 · Eric W. Schaefer3 · Christopher S. Hollenbeak4 Received: 6 July 2020 / Accepted: 13 October 2020 © Springer Nature B.V. 2020
Abstract Purpose Surveillance guidelines for kidney cancer following surgery are heterogeneous, making it unclear what factors influence surveillance intensity in practice. Thus, we assessed the patterns of surveillance intensity in kidney cancer after primary surgery among patients ≥ 66 years. Methods Non-metastatic kidney cancer patients after primary surgery (n = 2433) from 2007 to 2011 were identified in SEER-Medicare. Surveillance intensity was measured as the number of unique inpatient and outpatient claims made for kidney cancer starting 60 days after primary surgery. Multivariable linear regressions assessed relationships between patient factors and surveillance intensity (log-transformed). Parameters were reported using risk ratios (RRs). Results Patients diagnosed in contemporary years experienced 10% more surveillance visits/12 months (RR 1.10 for every 1-year increase, 95% CI 1.07–1.13, p
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