Table 2

Baseline characteristics and risk stratification of the HEART Score of patients with or without MACE and performance of the individual components of the HEART Score in the derivation cohort

No MACEMACE (%)Total
Baseline
Age, years mean (SD)65.6 (13.6)68.8 (12.0)65.9 (13.5)
Male sex (%)546 (50.6)87 (75.0)633 (53.0)
HR, bpm (SD)92 (19)91 (20)92 (20)
Systolic BP, mm Hg (SD)154 (29)156 (30)154 (30)
Diastolic BP, mm Hg (SD)89 (19)91 (23)89 (19)
Event-time-to-troponin, hours (SD)14 (2)17 (4)14 (2)
HEART Score median (IQR)4 (3)7 (3)5 (3)
Risk category
HEART 0–3 pts315 (98.4%)5 (1.6%)320 (26.5%)
HEART 4–6 pts648 (92.7%)51 (7.3%)699 (57.9%)
HEART 7–10 pts122 (64.6%)67 (35.4%)189 (15.6%)
Performance AUC 95% CIs P value
HEART Score0.8140.78 to 0.850.00
Components
History0.6930.65 to 0.740.00
ECG findings0.6860.63 to 0.740.00
Age0.5600.51 to 0.610.03
Risk factors0.5510.50 to 0.600.06
Troponin0.7140.66 to 0.770.00
  • AUC, area under the receiver operating characteristic curve; BP, blood pressure; HEART, history, ECG, age, risk factors and troponin; HR, heart rate; MACE, major adverse cardiac event.;