Because of AI

Because of AI-assisted decision support, 10 fewer stroke patients per 1,000 had another stroke, heart attack, or vascular death within three months.

26% fewer vascular events
AchievedJan 2021 – Jun 2023Publishedpublished 2 yr 9 mo after the benefit ended

GOLDEN BRIDGE II (BMJ, March 2026) cluster-randomized 77 Chinese hospitals and 21,603 acute ischemic stroke patients; new vascular events at three months were 2.9% with the AI-imaging decision-support system vs 3.9% with usual care (adjusted HR 0.71), with the benefit holding through 12 months.

Hospitals, not patients, were randomized, and the intervention bundled AI image analysis with guideline-based treatment prompts, so the AI's isolated contribution isn't separable; enrollment ran January 2021 to June 2023.

Compared with
Hospitals with AI-CDSS vs usual care; primary endpoint composite vascular events at 3 months
Effect
26% relative reduction (HR 0.71) (3.9% → 2.9%: 10 fewer events per 1,000 patients)
Reach
21,603 patients, 77 hospitals, 23 provinces
Domain
Medicine · Classic ML
Conflicts
verify: CDSS vendor and funding disclosures in the BMJ paper.
What would move the grade
A factorial design separating AI imaging from guideline prompts would resolve attribution.

Sources

Editor's notes

Worked example on /method for the achieved-vs-published rule.

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Permalink https://becauseofai.org/entry/golden-bridge-ii-stroke“Because of AI-assisted decision support, 10 fewer stroke patients per 1,000 had another stroke, heart attack, or vascular death within three months.” Because of AI, updated Oct 22, 2026. https://becauseofai.org/entry/golden-bridge-ii-stroke