Patient Outcomes following Subarachnoid Hemorrhage between the Medical Center and Regional Hospital: Whether All Patients Should Be Transferred to Medical Centers

Table 3

Independent risk factors associated with mortality.

Factor	Odds ratio	P value	95% confidence interval
Hospital volume	0.277	0.024	0.091–0.842
Surgeon volume	1.700	0.277	0.653–4.423
Hospital levels	0.648	0.374	0.249–1.686
Gender	0.921	0.864	0.362–2.348
Age	1.028	0.094	0.995–1.061
CCI	1.453	0.135	0.890–2.374

The risk factors included in the logistic regression model were surgeon volume, hospital volume, hospital levels, gender, age, and CCI.