Total TIMI STEMI score is the sum of all applicable presentation points, with a possible range of 0 to 14.

Predictor	Definition at presentation	Points
Age 65 to 74 years	Age at presentation 65 to 74 years	2
Age 75 years or older	Age at presentation 75 years or older	3
Diabetes, hypertension, or angina	Any history of diabetes mellitus, hypertension, or angina pectoris	1
Systolic BP less than 100 mm Hg	Initial systolic blood pressure less than 100 mm Hg	3
Heart rate greater than 100 beats/min	Initial heart rate greater than 100 beats/min	2
Killip class II-IV	Jugular venous distension, rales, pulmonary oedema, or cardiogenic shock	2
Weight less than 67 kg	Body weight less than 67 kg	1
Anterior ST elevation or LBBB	Anterior ST elevation or left bundle branch block on ECG	1
Time to reperfusion greater than 4 hours	Symptom onset to first reperfusion therapy greater than 4 hours	1

Original 30-day mortality estimates by score: 0 = 0.8%, 1 = 1.6%, 2 = 2.2%, 3 = 4.4%, 4 = 7.3%, 5 = 12.4%, 6 = 16.1%, 7 = 23.4%, 8 = 26.8%, and greater than 8 = 35.9%.

TIMI risk score for ST-elevation myocardial infarction (Morrow 2000)