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Table 2 Baseline demographics and clinical variables, stress-echocardiography and invasive coronary angiograms data in the entire population and in the subgroups with or without obstructive coronary artery disease > 50%

From: Equivocal tests after contrast stress-echocardiography compared with invasive coronary angiography or with CT angiography: CT calcium score in mildly positive tests may spare unnecessary coronary angiograms

 

Entire population (n = 314)

CAD > 50% (n = 241)

No CAD > 50% (n = 73)

p

Age, median (IQR)

66 (17)

67 (15)

63 (16)

0.005

Male Gender (%)

229 (73%)

(57%)

186 (77%)

43 (59%)

0.002

Hypertension (%)

227 (72%)

183 (76%)

44 (60%)

0.008

Family history of CAD (%)

93 (30%)

72 (30%)

21 (29%)

0.855

Smoking (%)

120 (38%)

99 (41%)

21(29%)

0.057

Hypercolesterolemia (%)

188 (60%)

152 (63%)

36 (49%)

0.035

Diabetes mellitus (%)

71 (23%)

63 (26%)

8 (11%)

0.006

Prior Miocardial infarction

73 (23%)

62 (26%)

11 (15%)

0.059

Coronary stenosis >50%

241 (77%)

241 (100%)

0

At least one stenosis more than 70%

222 (71%)

222 (92%)

0

Any reversible WM abnormality

206 (66%)

172 (71%)

35 (48%)

0.0002

More than mild reversible WM abnormality (>0.06)

164 (52%)

146 (61%)

18 (25%)

<0.0001

Reversible myocardial perfusion abnormality

136/176 (77%)a

105/130 (81%)a

31/46 (67%)a

0.063

CFR-LAD < 2

110/208 (53%)a

87/151 (58%)a

23/57 (40%)a

0.026

Normal WM + normal or unavailable myocardial perfusion and CFR-LAD

59 (19%)

44 (18%)

15 (20%)

0.66

  1. CAD coronary artery disease, IQR interquartile range, WM wall motion, CFR-LAD coronary flow reserve of the left anterior descending coronary artery
  2. aMyocardial perfusion and CFR-LAD percentages are related to the total number of patients in whom such variables could actually be technically measured