Urology
Volume 67, Issue 5 , Pages 984-989 , May 2006

Accurate prediction of need for invasive treatment in alpha1-blocker treated patients with benign prostatic hyperplasia not possible: Bootstrap validation analysis

  • Lambertus A.L.M. Kiemeney

      Affiliations

    • Department of Urology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
    • Department of Epidemiology and Biostatistics, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
    • Corresponding Author InformationReprint requests: Lambertus A. Kiemeney, Ph.D., Department of Urology, Radboud University Nijmegen Medical Centre, P.O. Box 9101, Nijmegen NL-6500 HB, The Netherlands.
    • ,
  • Chaidir A. Mochtar

      Affiliations

    • Department of Urology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
    • ,
  • Huub Straatman

      Affiliations

    • Department of Epidemiology and Biostatistics, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands

Received 24 August 2005 ,Accepted 22 November 2005.

References 

  1. Kiemeney LALM , Witjes JA , Heijbroek RP , et al.   Predictability of recurrent and progressive disease in individual patients with primary superficial bladder cancer . J Urol . 1993;150:60–64
  2. Moons KGM , Donders ART , Steyerberg EW , et al.   Penalized maximum likelihood estimation to directly adjust diagnostic and prognostic prediction models for overoptimism (a clinical example) . J Clin Epidemiol . 2004;57:1262–1270
  3. Bleeker SE , Moll HA , Steyerberg EW , et al.   External validation is necessary in prediction research (a clinical example) . J Clin Epidemiol . 2003;56:826–832
  4. Madersbacher S , Alivizatos G , Nordling J , et al.   EAU 2004 guidelines on assessment, therapy and follow-up of men with lower urinary tract symptoms suggestive of benign prostatic obstruction (BPH guidelines) . Eur Urol . 2004;46:547–554
  5. Mochtar CA , Kiemeney LALM , Laguna MP , et al.   Prognostic role of prostate-specific antigen and prostate volume for the risk of invasive therapy in patients with benign prostatic hyperplasia initially managed with alpha1-blockers and watchful waiting . Urology . 2005;65:300–305
  6. Efron B , Tibshirani R . An Introduction to the Bootstrap. Monographs on Statistics and Applied Probability . New York: Chapman & Hall; 1993;
  7. Kiemeney LALM , Verbeek ALM , van Houwelingen JC . Prognostic assessment from studies with non-randomized treatment assignment . J Clin Epidemiol . 1994;47:241–247

PII: S0090-4295(05)01702-4

doi: 10.1016/j.urology.2005.11.049

Urology
Volume 67, Issue 5 , Pages 984-989 , May 2006

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