Interpreting statistics in the urological literature.


Journal Article (Review)

PURPOSE: Knowledge of statistical terminology and the ability to critically interpret research findings are critical skills in the practice of evidence based medicine. MATERIALS AND METHODS: We provide a series of nontechnical explanations of basic statistical concepts commonly encountered in the urological literature. In addition, we provide examples of common statistical pitfalls to increase awareness of limitations to consider when applying research findings to practice. RESULTS: Statistical goals encountered in the urological literature can be broadly categorized as summarizing outcome variables, comparing 2 or more groups, measuring association among variables or predicting 1 variable from another. Errors frequently include the use of an inappropriate test for the data type of interest or using statistical testing in a manner that increases the likelihood of false-positive results. Such errors pose a threat to the validity of research findings and they may undermine study conclusions. CONCLUSIONS: Editors and reviewers alike should strive for high standards of statistical analysis and reporting, and promote the publication of high quality evidence in the urological literature. The understanding of basic statistical concepts and the principles of the hypothesis testing framework is essential to the critical appraisal process and, therefore, important to all urologists. Statistical literacy should be fostered through educational materials and courses in the urological community.

Full Text

Duke Authors

Cited Authors

  • Scales, CD; Peterson, B; Dahm, P

Published Date

  • November 2006

Published In

Volume / Issue

  • 176 / 5

Start / End Page

  • 1938 - 1945

PubMed ID

  • 17070214

Pubmed Central ID

  • 17070214

International Standard Serial Number (ISSN)

  • 0022-5347

Digital Object Identifier (DOI)

  • 10.1016/j.juro.2006.07.001


  • eng

Conference Location

  • United States