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Table 1 Patient baseline characteristics

From: Heart rate n-variability (HRnV) and its application to risk stratification of chest pain patients in the emergency department

 

Total (n = 795)

MACE (n = 247)

Non-MACE (n = 548)

p-value

Age, mean (SD)

59.63 (12.88)

61.06 (11.38)

58.99 (13.47)

0.035

Male gender, n (%)

542 (68.2)

188 (76.1)

354 (64.6)

0.002

Race, n (%)

   

0.623

 Chinese

492 (61.9)

159 (64.4)

333 (60.8)

 

 Indian

129 (16.2)

34 (13.8)

95 (17.3)

 

 Malay

150 (18.9)

46 (18.6)

104 (19.0)

 

 Other

24 (3.0)

8 (3.2)

16 (2.9)

 

Medical history, n (%)

 Ischemic heart disease

343 (43.1)

115 (46.6)

228 (41.6)

0.22

 Diabetes

278 (35.0)

106 (42.9)

172 (31.4)

0.002

 Hypertension

509 (64.0)

161 (65.2)

348 (63.5)

0.707

 Hypercholesterolemia

476 (59.9)

151 (61.1)

325 (59.3)

0.683

 Stroke

58 (7.3)

15 (6.1)

43 (7.8)

0.458

 Cancer

29 (3.6)

7 (2.8)

22 (4.0)

0.537

 Respiratory disease

31 (3.9)

5 (2.0)

26 (4.7)

0.102

 Chronic kidney disease

87 (10.9)

26 (10.5)

61 (11.1)

0.32

 Congestive heart failure

38 (4.8)

9 (3.6)

29 (5.3)

0.407

 History of PCI

199 (25.0)

68 (27.5)

131 (23.9)

0.316

 History of CABG

71 (8.9)

26 (10.5)

45 (8.2)

0.355

 History of AMI

133 (16.7)

48 (19.4)

85 (15.5)

0.288

 Active smoker

197 (24.8)

73 (29.6)

124 (22.6)

0.003

  1. MACE Major adverse cardiac events, SD Standard deviation, PCI Percutaneous coronary intervention, CABG Coronary artery bypass graft, AMI Acute myocardial infarction