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Survival analysis is a cornerstone of medical research, used to evaluate the time until an event of interest occurs, such as death, disease recurrence, or recovery. Unlike standard statistical methods, survival analysis is particularly adept at handling censored data—instances where the event has not occurred for some participants by the end of the study or remains unobserved. To address these unique challenges, specialized techniques like the Kaplan-Meier estimator, log-rank test, and...
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Related Experiment Video

Updated: Jan 21, 2026

Inverse Probability of Treatment Weighting Propensity Score using the Military Health System Data Repository and National Death Index
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Open Versus Robotic Cystectomy: A Propensity Score Matched Analysis Comparing Survival Outcomes.

Marco Moschini1,2,3, Stefania Zamboni3, Francesco Soria1,4

  • 1Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna General Hospital, A-1090 Vienna, Austria.

Journal of Clinical Medicine
|August 10, 2019
PubMed
Summary

Robotic assisted radical cystectomy (RARC) and open radical cystectomy (ORC) show similar survival outcomes for bladder cancer patients. This finding aids in patient consultations regarding surgical techniques and long-term results.

Keywords:
bladder canceropenpropensity scoreradical cystectomyrobotic-assistedsurvival

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Area of Science:

  • Urology
  • Surgical Oncology

Background:

  • Robotic assisted radical cystectomy (RARC) and open radical cystectomy (ORC) are surgical options for bladder cancer.
  • Comparative survival outcomes between RARC and ORC require further investigation in large cohorts.

Purpose of the Study:

  • To compare the differential effect of RARC versus ORC on survival outcomes.
  • To analyze recurrence and cancer-specific mortality (CSM) in a matched multicentric cohort.

Main Methods:

  • A large multicentric cohort of 9757 patients with urothelial bladder cancer undergoing radical cystectomy.
  • Propensity score matching (2:1) to create a balanced cohort of 1374 patients.
  • Multivariable competing risk analyses to assess the association of surgical technique with recurrence and CSM.

Main Results:

  • RARC and ORC demonstrated similar 3-year recurrence rates and CSM in the overall and propensity-matched populations.
  • Multivariable analyses confirmed no significant difference in recurrence or CSM between RARC and ORC (p > 0.1).
  • Median follow-up was 81 months pre-matching and 102 months post-matching.

Conclusions:

  • Robotic assisted radical cystectomy and open radical cystectomy yield comparable survival outcomes for bladder cancer patients.
  • Current data supports that surgical approach does not significantly impact long-term survival.
  • This information is valuable for patient counseling pending level one evidence.