Impact of onset timing and operative duration on outcomes in chronic subdural hematoma: an exploratory retrospective study.

Front Neurol · 2026 · PMC13189802 · PMID 42180226

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an increasing trendno p-value reported

It typically develops 3 weeks after head trauma, with an annual incidence of 1.7–20.6 per 100,000 cases, showing an increasing trend over time ( 2 , 3 ).

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