Referral bias in aneurysmal subarachnoid hemorrhage.

  title={Referral bias in aneurysmal subarachnoid hemorrhage.},
  author={Jack P Whisnant and Simona Sacco and W Michael O'fallon and N C Fode and Thoralf M. Sundt},
  journal={Journal of neurosurgery},
  volume={78 5},
The objective of this study was to assess the effect of referral bias on survival in patients with subarachnoid hemorrhage (SAH). The characteristics of 49 patients with aneurysmal SAH from a single community were compared with those of 328 patients referred from outside the community, all treated in the same medical care setting. In addition, referral patients who received surgery were compared by differential survival analysis with those still awaiting surgery at Days 1 to 3, Days 4 to 10… CONTINUE READING

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