Drains result in greater reduction of subdural width and midline shift in burr hole evacuation of chronic subdural haematoma.

Acta Neurochir (Wien) · 2020 · PMC7235065 · PMID 32338300

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did not quite reach significanceno p-value reported

This factor did not quite reach significance for increased recurrence although the presence of ongoing mass effect on postoperative CT was significantly associated with recurrence [ 18 ].

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