Table 2.

Comparison of C-statistics for Predicting In-hospital Mortality, 30-Day Mortality, and Hospital Readmissions

Models	30-day mortality C-statistic (95% CI)	30-day readmission C-statistic (95% CI)
Base model*	0.71 (0.70–0.72)	0.55 (0.54–0.56)
Base model + NIHSS	0.83 (0.82–0.84)	0.59 (0.58–0.60)
Base model + Elixhauser	0.74 (0.73–0.75)	0.59 (0.58–0.60)
Base model + Elixhauser + NIHSS	0.84 (0.83–0.86)	0.61 (0.60–0.62)

*Base model included age, gender, race, and dual eligibility