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Gynaecologic surgery from uncertainty to science: evidence-based surgery is no passing fad
N P Johnson1, T Selman, J Zamora
1Department of Obstetrics and Gynaecology, University of Auckland, National Women's Health, Level 12, Auckland Hospital, Auckland, New Zealand. n.johnson@auckland.ac.nz
Background:
The randomized controlled trial (RCT) is the least biased measure of the effectiveness of interventions, including surgical interventions. The aim was to review the available evidence base in gynaecologic surgery, to assess what progress has been made and to determine gaps in the evidence for clinical decision-making.
Methods:
Systematic reviews involving gynaecological surgery interventions were extracted from the Cochrane Database of Systematic Reviews (Issue 2, 2007) and data were extracted for key primary outcomes from each of the randomized trials in the reviews. The reviews were categorized as to whether they had provided evidence of effectiveness for pre-defined outcomes of most relevance to patients.
Results:
Of 371 reviews or protocols published on the Cochrane Database of Systematic Reviews (Issue 2, 2007), only 30 were completed reviews assessing surgical interventions. Seven reviews concluded there was evidence of a significant effect (whether beneficial or harmful) of the interventions studied for pre-defined primary outcomes; 11 reviews concluded there was some evidence of significant effects for primary outcomes along with some gaps for primary outcomes; 12 reviews concluded insufficient evidence of effectiveness. Common themes of unique methodological challenges and pitfalls with trials of surgical interventions were apparent.
Conclusions:
Cochrane reviews have gone a long way to establishing a sound evidence base in gynaecologic surgery: some gaps in the evidence have been eliminated and others highlighted. In general, gynaecology has been a specialty where surgical interventions have been well exposed to the scrutiny of RCTs compared with other surgical specialties.
Insights
Cochrane reviews show progress in gynecologic surgery evidence, identifying both established and missing data for patient care. This highlights the importance of randomized controlled trials (RCTs) in evaluating surgical interventions.
Area of Science:
- Evidence-based medicine
- Surgical innovation assessment
- Gynecologic surgery research
Background:
- Randomized controlled trials (RCTs) are the gold standard for assessing intervention effectiveness.
- Evaluating the evidence base in gynecologic surgery is crucial for clinical decision-making.
- Identifying progress and gaps in surgical evidence guides future research.
Purpose of the Study:
- To systematically review the evidence base for gynecologic surgery interventions.
- To assess the progress made in establishing evidence through RCTs.
- To identify remaining gaps in evidence for clinical decision-making in gynecologic surgery.
Main Methods:
- Systematic review of completed Cochrane reviews on gynecologic surgery interventions.
- Extraction of primary outcome data from included randomized trials.
- Categorization of reviews based on evidence of effectiveness for patient-relevant outcomes.
Main Results:
- Out of 371 reviews, 30 assessed surgical interventions.
- Seven reviews found significant evidence of effectiveness (beneficial or harmful).
- Eleven reviews showed some evidence with identified gaps; 12 found insufficient evidence.
Conclusions:
- Cochrane reviews have significantly contributed to the evidence base in gynecologic surgery.
- Evidence gaps have been addressed and new ones identified.
- Gynecologic surgery has been well-examined by RCTs compared to other surgical fields.
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