Table 1. Calculation of risk score using the TIMI NSTEMI/UA system.

Risk Scoring System	Inclusion Criteria	Score
TIMI NSTEMI /UA (0–7)	Age ≥ 65 years	1
	≥ 3 risk factors (hypertension, diabetes mellitus, family history, lipids, smoking)	1
	Known CAD (stenosis ≥ 50%)	1
	Aspirin use in past 7 days	1
	Severe angina (≥ 2 episodes within 24 hours)	1
	ST-segment deviation ≥ 0.5 mm	1
	Elevated cardiac markers	1

TIMI, Thrombolysis in Myocardial Infarction; NSTEMI, non-ST segment elevated myocardial infarction; UA, unstable angina; CAD, coronary artery disease.