December 1, 1994Stroke
Equivalence of measurements of carotid stenosis. A comparison of three methods on 1001 angiograms. European Carotid Surgery Trialists' Collaborative Group.
Why the study?
Are different methods of measuring carotid stenosis on angiograms equivalent?
Population
1001 carotid angiograms
Comparison
Measurement of carotid stenosis using three… vs Comparison between the three measurement methods
Design
Other
Authors
Discussion
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Member takes
Implication
Clinicians should adjust for method-specific disparities using conversion equations; leaves open prospective validation of standardized reporting.
Structured PICO
Are different methods of measuring carotid stenosis on angiograms equivalent?
P
Population
1001 carotid angiograms
I
Intervention
Measurement of carotid stenosis using three different methods
C
Comparator
Comparison between the three measurement methods
O
Outcome
Disparities between measurements of stenosis made using different methodssurrogate
Different methods of measuring carotid stenosis yield clinically important disparities, but measurements can be standardized by converting between methods using a simple arithmetic equation.
Cite This Study
Rothwell et al. (1994) studied this question.