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Table 3 Clinical Characteristics of Patients with and without MACE (Cohort B)

From: Clinical values of resting electrocardiography in patients with known or suspected chronic coronary artery disease: a stress perfusion cardiac MRI study

 

All (n = 495)

MACE (n = 91)

No MACE (n = 404)

P value

Age, years

68.9 ± 10.6

70.5 ± 10.5

68.5 ± 10.7

0.1

Men

253 (51.1)

49 (53.9)

204 (50.5)

0.56

Body mass index, kg/m2

26.6 ± 4.4

25.9 ± 4.2

26.8 ± 4.4

0.08

Systolic blood pressure, mmHg

137.0 ± 19.9

137.4 ± 22.8

136.9 ± 19.1

0.84

Diastolic blood pressure, mmHg

73.0 ± 12.0

69.9 ± 11.7

73.7 ± 12.0

0.01

Heart rate, beats/minute

77.1 ± 13.7

76.8 ± 14.4

77.1 ± 13.6

0.83

CAD risk factors

 Hypertension

449 (90.7)

86 (94.5)

363 (89.9)

0.17

 Hyperlipidemia

406 (82.0)

81 (89.0)

325 (80.5)

0.06

 Diabetes mellitus

283 (57.2)

59 (64.8)

224 (55.4)

0.1

 Cigarette smoking

91 (18.4)

23 (25.3)

68 (16.8)

0.06

Clinical history

 History of CAD

143 (28.9)

52 (57.1)

91 (22.5)

 < 0.001

 History of myocardial infarction

25 (5.1)

9 (9.9)

16 (4.0)

0.03

 Prior revascularization

99 (20.0)

36 (39.6)

63 (15.6)

 < 0.001

 History of heart failure

55 (11.1)

25 (27.5)

30 (7.4)

 < 0.001

Medications

 ACEI or ARB

231 (46.7)

51 (56.0)

180 (44.6)

0.04

 Antiplatelet

267 (53.9)

59 (64.8)

208 (51.5)

0.02

 Beta blocker

250 (50.5)

50 (55.0)

200 (49.5)

0.35

 Calcium channel blocker

160 (32.3)

27 (29.7)

133 (32.9)

0.55

 Statin

277 (56.0)

59 (64.8)

218 (54.0)

0.06

ECGa

 QRS axis, degree

25.4 ± 37.7

22.2 ± 35.7

26.1 ± 38.1

0.46

 No ECG abnormality

156 (31.5)

21 (23.1)

135 (33.4)

0.06

 Major ECG abnormality

185 (37.4)

56 (61.5)

129 (31.9)

 < 0.001

 Q-Qs wave

76 (15.4)

25 (27.5)

51 (12.6)

 < 0.001

 LV hypertrophy

43 (8.7)

17 (18.7)

26 (6.4)

 < 0.001

 Complete bundle branch/IVB

38 (7.7)

6 (6.6)

32 (7.9)

0.67

 Atrial fibrillation/flutter

12 (2.4)

6 (6.6)

6 (1.5)

0.01

 Major ST-T changes

64 (12.9)

25 (27.5)

39 (9.7)

 < 0.001

 Minor ECG abnormality

154 (31.1)

14 (15.4)

140 (34.7)

 < 0.001

 Minor ST-T changes

95 (19.2)

11 (12.1)

84 (20.8)

0.06

 Minor/isolated Q wave

86 (17.4)

6 (6.6)

80 (19.8)

0.003

CMR

 LV end diastolic volume index, ml/m2

77.6 ± 26.7

91.9 ± 37.6

74.4 ± 22.5

 < 0.001

 LV end systolic volume index, ml/m [2]

29.3 ± 26.6

45.0 ± 38.3

25.7 ± 21.7

 < 0.001

 LV ejection fraction, %

66.5 ± 15.0

58.2 ± 19.9

68.4 ± 13.0

 < 0.001

 LV mass index, g/m2

53.1 ± 17.4

62.0 ± 21.0

51.0 ± 15.8

 < 0.001

 Myocardial ischemia

153 (30.9)

49 (53.9)

104 (25.7)

 < 0.001

 Late gadolinium enhancement

146 (29.4)

51 (56.0)

95 (23.5)

 < 0.001

  1. Values are numbers (percentages) or mean ± standard deviation. Bold values are < 0.05
  2. IVB = intraventricular block; MACE = major adverse cardiac events; other abbreviations as in Table 1
  3. aSee “Methods” section for definitions of major and minor ECG abnormalities