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Table 1 Clinical characteristics and echocardiographic data in the 3 angiographic categories, according to QCA results.

From: Incremental value of contrast myocardial perfusion to detect intermediate versus severe coronary artery stenosis during stress-echocardiography

Study group n = 150 No CAD CAD 50%-70% CAD > 70% p value
Patients n (%*) 48 41 61 -
Age, mean(± 1 SD), y 64 (10) 69 (9) 70 (9) ns
Men, n (%) 26 (54) 24 (59) 40 (65) ns
Risk factors ≥2, n (%) 37 (77) 34 (85) 51 (84) ns
Hypertension, n (%) 32 (67) 30 (73) 42 (69) ns
Diabetes Mellitus n (%) 6 (13) 12 (29) 19 (31) ns
Prior myocardial infarction or PCI n (%) 11 (23) 13 (32) 23 (38) ns
Presence of baseline WM abnormalities, n % 10 (21) 14 (34) 24 (39) ns
Baseline LVEF, % 57 ± 8 54 ± 9 52 ± 10 ns
Abnormal WM, n (%) 8 (17) 15 (37) 52 (85) p < 0.001
Abnormal myocardial perfusion n (%) 15 (31) 40 (98) 58 (95) ns
Peak RPP mean(± 1 SD) 15124 (3140) 15416(3684) 14615(2705) ns
  1. Risk factors considered were: hypertension, diabetes, current smoking, hypercholesterolemia, familiar history of premature coronary artery disease (CAD) and obesity. The "No CAD" group includes patients with < 50% CAD. P value refers to difference between the 2 disease groups "CAD 50%-70%" and "CAD > 70%". QCA = quantitative coronary angiography, PCI = percutaneous coronary intervention, LVEF = left ventricular ejection fraction, WM = wall motion, MPI = myocardial perfusion imaging, RPP = rate-pressure product