What type of study is this?

This is a Retrospective cohort study study.

September 5, 2025JAMA Network OpenOpen Access

Computed Tomographic Angiography and Yield for Gastrointestinal Bleeding in the Emergency Department

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Retrospective cohort study evaluates CTA use and diagnostic yield for gastrointestinal bleeding, suggesting careful oversight.

CTA use increased from 0.09% to 0.65% among ED CT examinations over seven years, yet diagnostic yield declined.
The test-positive proportion fell from 20% in 2017 to 6.3% in 2023, indicating reduced effectiveness over time.
Multivariable analysis reveals that older age correlates with higher odds of test positivity, but active cancer lowers it.
Finding highlights a need for evidence-based criteria to balance the benefits and operational strains of CTA in the ED.

Prasad et al. (2025) studied this question.

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