Table 1

Patient demographics and clinical characteristics

CharacteristicsAll patients
(N=320) (%)
Positive for ischaemia
(n=26*) (%)
Negative for ischaemia
(n=292) (%)
Age (years), median (25th, 75th)51.0 (44.0, 59.5)56.0 (49.0, 63.0)50.0 (43.0, 59.0)
Sex
 Male147 (45.9)12 (46.2)133 (45.5)
 Female173 (54.1)14 (53.8)159 (54.5)
Race/Ethnicity
 Hispanic or Latino15 (4.7)1 (3.8)14 (4.8)
 Asian4 (1.3)0 (0)4 (1.4)
 Black or African–American122 (38.1)10 (38.5)111 (38.0)
 White/Caucasian188 (58.8)16 (61.5)171 (58.6)
 Other6 (1.9)06 (2.1)
Hypertension155 (48.4)18 (69.2)136 (46.6)
Diabetes59 (18.4)5 (19.2)54 (18.5)
History of tobacco use118 (36.9)11 (44.0)106 (37.2)
Hyperlipidaemia105 (32.8)16 (61.5)89 (30.5)
Cocaine use21 (6.6)2 (8.0)19 (6.6)
Renal disease/insufficiency5 (1.5)2 (7.7)3 (1.0)
Past myocardial infarction7 (2.2)5 (19.2)2 (0.7)
Coronary artery disease16 (5.0)7 (26.9)9 (3.1)
History of coronary intervention10 (3.2)3 (11.5)7 (2.4)
Congestive heart failure5 (1.6)1 (3.8)4 (1.4)
Chief complaint: chest pain290 (90.6)24 (92.3)264 (90.4)
Peak pain score (median)776.9
Duration of symptoms (median, min)212
Pain description
 Was your pain worse if you walk quickly, climb stairs or exert yourself?66 (20.6)3 (11.5)63 (21.6)
 Was your pain worse if you take a deep breath or cough?75 (23.4)6 (23.1)69 (23.6)
 Was your pain worse if you pressed on the chest wall?48 (15)3 (11.5)45 (15.4)
Associated symptoms?
 Nausea or vomiting107 (33.4)10 (38.5)97 (33.2)
 Dyspnoea136 (42.5)12 (46.2)123 (42.1)
 Diaphoresis89 (27.8)11 (42.3)77 (26.4)
 Syncope55 (17.2)1 (3.8)54 (18.5)
  • *2 patients with indeterminate stress tests excluded.