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Table 1 Comparison of patient characteristics between the two hospitals (N = 996)

From: Comparison of outcomes in emergency department patients with suspected cardiac chest pain: two-centre prospective observational study in Southern China

  AHGZMU (n = 407) PWH (n = 589) P
Age, years, mean (SD) 66.6 (14.4) 63.7 (14.6) 0.002*
Males, n (%) 220 (54.1) 325 (55.2) 0.726
Past histories
 Smoker, n (%) 69 (17.0) 78 (13.2) 0.105
 Hypertension, n (%) 245 (60.2) 362 (60.9) 0.688
 Diabetes, n (%) 79 (19.4) 153 (26.0) 0.016*
 Hyperlipidemia, n (%) 92 (22.6) 266 (45.2) < 0.0001*
 Chronic heart failure, n (%) 26 (6.4) 62 (10.5) 0.024*
 Family heart disease, n (%) 72 (17.7) 125 (21.2) 0.169
 Stroke, n (%) 26 (6.4) 72 (12.2) 0.002*
 Peripheral arterial disease, n (%) 6 (1.5) 20 (3.4) 0.062
NHYA classification
 NHYA class I, n (%) 234 (57.5) 401 (68.1) 0.001*
 NHYA class II, n (%) 118 (29.0) 75 (12.7) < 0.0001
 NHYA class III, n (%) 51 (12.5) 108 (18.3) 0.014*
 NHYA class IV, n (%) 4 (1.0) 5 (0.8) 0.826
First ED characteristics
 Heart rate, bpm, mean (SD) 88.4 (27.8) 82.0 (19.1) < 0.0001*
 Systolic blood pressure, mmHg, mean (SD) 141.3 (30.1) 148.7 (25.9) 0.001*
 Diastolic blood pressure, mmHg, mean (SD) 78.2 (17.0) 80.1 (15.4) 0.018
First lab results in ED
 Creatinine, μmoL/L, median (IQR) 88.0 (71.0, 109.0) 81.0 (66.0, 97.0) < 0.0001*
 Troponin
   ≤ 1× 224 (78.9) 420 (72.4) < 0.0001*
  1×-2× 21 (7.4) 85 (14.7) < 0.0001*
  2×-3× 8 (2.8) 22 (3.8) 0.108
   ≥ 3× 31 (10.9) 53 (9.1) 0.441
 Number of CK done, n (%) 399 (98.0) 339 (57.6) < 0.0001*
 Number of CK-MB done, n (%) 399 (98.0) 0 (0) < 0.0001*
ST segment depression, n (%) 80 (8.0) 19 (1.9) < 0.0001*
Onset- ED time,hour, median (IQR) 4.03 (1.5–13.21) 6.52 (2.01–23.27) < 0.0001*
ED-ECG time, hour, median (IQR) 0.17 (0.03–0.47) 0.18 (0.12–0.28) 0.234
HEART Score, median (IQR) 4 (3,6) 4 (2,5) < 0.0001*
Number of admission 231 (56.8) 334 (56.7) 0.987
Final diagnoses
 Ischemia coronary chest pain 120 (29.5) 163 (27.7) 0.534
  NSTEMI, n (%) 40 (9.8) 32 (5.4)  
  Unstable angina, n (%) 65(16.0) 71(12.1)  
  Stable angina, n (%) 15 (3.7) 60 (10.2)  
 Non-ischaemia cardiac chest pain, n (%) 136 (33.4) 84 (14.3) < 0.0001*
 Non-cardiac chest pain, n (%) 151 (37.1) 342 (58.1) < 0.0001*
  1. *statistically significant