Table 1 Baseline characteristics of patients

From: High-sensitive cardiac troponin for the diagnosis of acute myocardial infarction in different chronic kidney disease stages

  Total AMI Non-AMI P value
Number of patients (n, %) 3295 2758 (83.7) 537 (16.3)  
Age (years) 61 (48, 71) 64 (55, 74) 57 (43, 70) < 0.001
Sex (male) 2483 (75.4) 2165 (78.5) 318 (59.2) < 0.001
Risk factors
 Hypertension 1688 (51.2) 1567(56.8) 121 (22.5) < 0.001
 Hypercholesterolemia 930 (28.2) 880 (31.9) 50 (9.3) < 0.001
 Diabetes mellitus 682 (20.7) 646 (23.4) 26 (4.8) < 0.001
 Current smoking 1519 (46.1) 1288 (46.7) 231 (43.2) 0.069
 History of smoking 1770 (53.7) 1497(54.3) 273 (50.8) 0.076
History
 Family history of CAD 82 (2.6) 77 (2.8) 5 (0.87) < 0.001
 Prior CAD 758 (23.0) 723 (26.2) 35 (6.5) < 0.001
Vital status
 Heart rate (bpm) 76 (64, 88) 79 (66, 94) 74 (63, 84) < 0.001
 Systolic blood pressure (mmHg) 125 (115, 137) 143 (129, 162) 119 (114, 132) < 0.001
 Diastolic blood pressure (mmHg) 81 (71, 93) 85 (76, 94) 73 (68, 82) < 0.001
Hs-cTnI (ng mL−1) 19.43 (1.38, 48.60) 20.91 (2.46, 48.03) 0.57 (0.16, 0.44) < 0.001
Time from symptom onset (h)
 < 6 (n, %) 1267 (38.5) 1063 (38.5) 204 (38.0) 0.977
 ≥ 6 (n, %) 2028 (61.5) 1695 (61.5) 333 (62.0) 0.976
  1. For group comparisons, Student’s t test was used for normally distributed variables and non-parametric Mann–Whitney tests for non-normally distributed variables. Categorical variables were compared with a χ2-test
  2. AMI acute myocardial infarction, CAD coronary artery disease, Hs-cTnI high-sensitive cardiac troponin I