Table 2.

Patient characteristics

Variable	All patients (N: 360, 100%)	Stable anginal syndromes (N: 233, 65%)	Unstable anginal syndrome (N: 127, 35%)	p
Typical angina pectoris	151 (42%)	151 (65%)	–	–
Atypical angina pectoris	82 (23%)	82 (35%)	–
Unstable angina pectoris	127 (35%)	–	127 (100%)
Men	245 (68%)	156 (67%)	89 (70%)	0.56
Age (years)a	60 ± 6	60 ± 6	60 ± 6	0.72
Body mass index (kg/m²)a	27.3 ± 3.8	27.6 ± 3.9	26.8 ± 3.5	0.06
Heart rate (bpm)a	59 ± 9	59 ± 10	59 ± 8	0.99
Risk factors
Hypertensionb	219 (61%)	149 (64%)	70 (55%)	0.11
Hypercholesterolemiac	228 (63%)	151 (65%)	77 (61%)	0.49
Diabetes mellitusd	63 (18%)	47 (20%)	16 (13%)	0.08
Smoker	137 (38%)	74 (32%)	63 (50%)	0.001
Family history of CAD	183 (51%)	113 (48%)	70 (55%)	0.27
Body mass index ≥ 30 kg/m²	85 (24%)	59 (25%)	26 (20%)	0.36
Previous myocardial infarction	53 (15%)	36 (15%)	17 (13%)	0.64
Calcium score (Agatston score)e	213 (42–553)	211 (31–639)	216 (44–478)	0.59
Conventional coronary angiography
Prevalence of obstructive CAD	246 (68%)	146 (63%)	100 (79%)	0.002
Absence of significant CAD	114 (32%)	87 (37%)	27 (21%)	0.009
Single vessel disease	141 (39%)	88 (38%)	53 (42%)
Two vessel disease	78 (22%)	46 (20%)	32 (25%)
Three vessel disease	21 (6%)	10 (4%)	11 (9%)
Left main coronary artery disease	6 (2%)	2 (1%)	4 (3%)

^aMean and standard deviation

^bBlood pressure ≥140/90 mm Hg or treatment for hypertension

^cTotal cholesterol >180 mg/dl or treatment for hypercholesterolemia

^dTreatment with oral anti-diabetic medication or insulin

^eMedian and quartiles. Values are n (%) unless otherwise indicated. Categorical variables were tested with Fisher exact and chi square test. Continuous variables were tested with unpaired two sided student t test. If not normally distributed, continuous variables were compared with the Mann–Whitney test. p-Values are significant if values <0.05