Table 3.
Cox proportional hazard model evaluating predictors of mortality at 365 days after admission for subarachnoid hemorrhage.
| Predictors of Mortality | |||
|---|---|---|---|
|
| |||
| Characteristic | Hazard Ratio | 95% Confidence Interval | P-value |
|
| |||
| 365 Days after SAH | |||
|
| |||
| Treatment Modality | 0.11 | ||
| Endovascular Coiling | Ref. | -- | |
| Microsurgical Clipping | 1.27 | (0.95–1.68) | |
|
| |||
| Age | 1.09 | (1.05–1.12) | <0.001 |
|
| |||
| Female Sex | 0.63 | (0.46–0.86) | 0.003 |
|
| |||
| Race or Ethnicity | 0.60 | ||
| Caucasian | Ref. | -- | |
| African-American | 0.77 | (0.49–1.23) | |
| Hispanic | 0.80 | (0.51–1.24) | |
| Other or Unknown | 0.96 | (0.59–1.57) | |
|
| |||
| Socioeconomic Status | 0.35 | ||
| Lower Quartile | Ref. | -- | |
| Second Quartile | 0.75 | (0.51–1.11) | |
| Third Quartile | 1.05 | (0.73–1.51) | |
| Upper Quartile | 0.88 | (0.62–1.29) | |
|
| |||
| Number of Comorbidities | 1.07 | (0.96–1.20) | 0.24 |
|
| |||
| NIS-SAH Severity Scale | 1.01 | (0.99–1.03) | 0.19 |
|
| |||
| Tracheostomy | 2.11 | (1.49–2.98) | <0.001 |
|
| |||
| Gastrostomy | 1.54 | (1.13–2.09) | 0.006 |
|
| |||
| Hospitalization During the Prior Year | 0.95 | (0.72–1.26) | 0.72 |
|
| |||
| Length of Stay during the SAH Hospitalization | 1.02 | (1.00–1.03) | 0.009 |
NIS-SAH indicates National Inpatient Sample Subarachnoid Hemorrhage Severity Scale. SAH, subarachnoid hemorrhage.
*
Statistically significant differences in multivariable cox proportional hazard model are bolded.