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Updated: Nov 4, 2025

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Published on: August 14, 2019
Are randomized controlled trials in urology being conducted with justification?
Samuel Shepard1, Audrey Wise1, Bradley S Johnson1
1Office of Medical Student Research, Oklahoma State University Center for Health Sciences, Tulsa, OK, USA.
Systematic reviews (SRs) are inconsistently used to justify randomized controlled trials (RCTs) in top urology journals. Improving SR utilization can reduce research waste and enhance evidence-based medicine in urology.
Area of Science:
- Urology
- Evidence-Based Medicine
- Research Methodology
Background:
- Minimizing research waste is crucial given increased urology research funding.
- Systematic reviews (SRs) consolidate evidence, aiding in the reduction of redundant studies and unsubstantiated treatments.
Purpose of the Study:
- To evaluate the use of SRs as justification for randomized controlled trials (RCTs) in leading urology journals.
- To analyze how SRs were incorporated into RCT manuscripts within the top four urology journals.
Main Methods:
- A PubMed search identified RCTs published between 2014-2019 in four high-impact urology journals.
- Data extracted included intervention type, funding, trial design, and SR citation (verbatim, inferred, or not used).
Main Results:
- Over half (54.3%) of included RCTs cited an SR for justification; 39.1% cited it verbatim.
- A significant association was found between verbatim SR justification and "other" intervention types (58.1%) compared to pharmaceutical trials (33.1%).
- SR citations were most frequently found in the Discussion section (50.8%) rather than the Methods section (3.7%).
Conclusions:
- RCTs in top urology journals show inconsistent referencing of SRs for justification, with 39.1% not citing any SR.
- A gap exists between evidence-based medicine principles and their application in urology RCTs.
- Educating researchers on SR use for RCT justification may decrease research waste and improve study quality in urology.
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