Table 1

Demographic data and symptoms in patients with normal coronary angiograms (NCA), controls (CAD), and 65 matched consecutive admissions with confirmed coronary artery disease (Parent CAD)

NCA (n = 61) CAD (n = 25) Parent CAD (n = 65)
Age (mean (SD))54 (9)59 (8)61 (9)
Sex (M/F)23/3810/1524/41
Smokers 12 (20)5 (20)23 (35)
Cholesterol (mmol/l) (mean (SD))6.0 (1.5)7.0 (1.1)6.8 (1.5)
Diabetes000
Hypertension20 (33)11 (44)28 (43)
Abnormal rest ECG14 (23)2 (8)8 (12)
Abnormal exercise ECG14 (23)25 (100)37/56 (66)
Chest pain characteristics
 Chest pain on exertion58 (95)25 (100)65 (100)
 Chest pain at rest50 (82)10 (40)35 (54)
 Usual duration ⩽ 5 min22 (36)22 (88)56 (86)1-160
 Predictability <10/1038 (62)5 (20)14 (22)1-160
 Rest pain ⩾2/1040 (66)4 (16)19 (29)1-160
 Radiation to arms40 (66)12 (48)36 (55)
 Radiation to back17 (28)7 (28)20 (31)
 Nocturnal20 (33)7 (28)12 (19)
Frequency of pain
 Daily32 (52)18 (72)53 (81)
 Weekly23 (38)6 (24)8 (13)
 Occasional6 (10)1 (4)4 (6)
Additional symptoms
 Heartburn21 (34)8 (32)25 (38)
 Dysphagia14 (23)0 3 (5)1-160
 Waterbrash20 (33)6 (24)19 (29)
 Flatulence26 (43)6 (24)20 (31)
 Variable stool habit12 (20)0 2 (3)1-160
  • Results are expressed as n (%) except where shown.

  • 1-160 p < 0.01 v NCA group. There were no significant differences between CAD and Parent CAD groups.