Table 1. – Comparison of variables and predictions of outcomes of the TIMI, GRACE and HEART scores.

Risk Scores
TIMI	GRACE	HEART
Age	Age	Age
ST deviation	ST deviation	ECG: ST deviation — nonspecific disorder, repolarization or LBBB — normal
+ markers	+ markers	Troponin 3 ×, 1 to 3 ×, normal
Risk factors < 3 or > 3		RF > 3 or atherosclerosis, 1 or 2 RF, without RF
Chest pain in 24 hours		Clinical history
	Heart rate
	Systolic blood pressure
	Killip
Coronary stenosis >50%
Acetylsalicylic acid: 7 days
	Creatinine
	Cardiac arrest
Prediction of Outcomes
TIMI	GRACE	HEART
14-day prediction: death, reinfarction, emergency coronary artery bypass grafting	Prediction of mortality at admission and for 1 year	Prediction for 6 weeks of death, surgical or percutaneous coronary artery bypass grafting and AMI

ECG: electrocardiography; LBBB: left bundle branch block; RF: risk factor; AMI: acute myocardial infarction.