There was not statistically significant difference between GRACE score and TIMI score in the prognostic value in-hospital mortality and 30-day mortality (Delong test p = 0.321 for in-hospital mortality and p = 0.08 for 30-day mortality); the specificity of GRACE score was higher than that of TIMI score for in-hospital mortality (81.6% versus 67.1%, p < 0.001) and 30-day mortality (79.2% versus 69.5%, p < 0.001).