Key result
Treatment at high-volume hospitals was associated with significantly lower in-hospital mortality compared to low-volume hospitals (32% vs 49%; OR 0.57, 95% CI 0.48-0.67; P<0.001).
Why the study?
Does treatment at high-volume hospitals reduce mortality in patients with subarachnoid hemorrhage?
Population
12,804 patients with a primary diagnosis of subarachnoid hemorrhage admitted through the emergency…
Comparison
Treatment at high-volume hospitals vs Treatment at low-volume hospitals
Design
Cohort
Follow-up
In-hospital
Authors
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Supports regionalization of subarachnoid hemorrhage care to high-volume centers; leaves open whether volume itself drives outcomes.
Observational (n=12,804)
Yes
Does treatment at high-volume hospitals reduce mortality in patients with subarachnoid hemorrhage?
Odds Ratio: 0.57 (95% CI 0.48–0.67)
Absolute Event Rate: 32% vs 49%
p-value: p=<0.001
Patients with subarachnoid hemorrhage treated at high-volume hospitals have substantially lower rates of in-hospital mortality compared to those treated at low-volume hospitals.
Bardach et al. (2002) conducted an observational in Subarachnoid hemorrhage (n=12,804). High-volume hospital treatment (highest quartile: 19-70 cases/year) vs. Low-volume hospital treatment (lowest quartile: 0-8 cases/year) was evaluated on In-hospital mortality (OR 0.57, 95% CI 0.48 to 0.67, p=<0.001). Treatment at high-volume hospitals was associated with significantly lower in-hospital mortality compared to low-volume hospitals (32% vs 49%; OR 0.57, 95% CI 0.48-0.67; P<0.001).
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