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Evid Based Nurs 5:90 doi:10.1136/ebn.5.3.90
  • Clinical prediction guide

A simple risk index accurately predicted mortality in patients with ST elevation myocardial infarction

Risk index scores (quintiles) and mortality risks for patients with ST elevation myocardial infarction (derivation data set)

Mortality risk
Risk index scores† 24 hours In hospital 30 days
†(Heart rate × [age/10]2)/systolic blood pressure.
≤12.5 0.2% 0.6% 0.8%
>12.5 to 17.5 0.4% 1.5% 1.9%
>17.5 to 22.5 1.0% 3.1% 3.3%
>22.5 to 30 2.4% 6.5% 7.3%
>30 6.9% 15.8% 17.4%

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