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Table 1 Clinical characteristics according to different risk status

From: The prognostic value of MELD-XI in elderly patients with ST-segment elevation myocardial infarction: an observational study

Variable Low-risk group (≤ 3, n = 251) Moderate-risk group (4–6, n = 509) High-risk group (≥ 7, n = 269) P value
Age, years 64.0 ± 4.2 71.6 ± 6.5 73.3 ± 6.5 < 0.001
Female sex, n (%) 36 (14.3) 136 (26.7) 89 (33.1) < 0.001
Diabetes mellitus, n (%) 58 (23.1) 142 (27.9) 83 (30.9) 0.136
Hypertension, n (%) 147 (58.6) 322 (63.3) 156 (58.0) 0.258
Weight, kg 67.8 ± 9.7 61.4 ± 9.8 59.5 ± 9.3 < 0.001
Time to admission > 4 h, n (%) 181 (72.1) 444 (87.2) 244 (90.7) < 0.001
Anterior myocardial infarction, n (%) 78 (31.1) 224 (44.0) 169 (62.8) < 0.001
SBP, mmHg 127.2 ± 17.7 126.1 ± 20.8 110.7 ± 26.4 < 0.001
DBP, mmHg 75.6 ± 11.2 73.4 ± 12.4 67.6 ± 14.4 < 0.001
Heart rate, bpm 76.4 ± 12.5 77.5 ± 13.1 86.3 ± 21.0 < 0.001
Killip II–IV, n (%) 16 (6.4) 145 (28.5) 208 (77.3) < 0.001
Serum creatinine, mg/dL 1.0 (0.8,1.1) 1.0 (0.8,1.3) 1.2 (0.9,1.5) < 0.001
Hemoglobin, g/L 133.1 ± 14.0 126.6 ± 15.7 124.4 ± 18.8 < 0.001
Creatine kinase MB, U/L 68.7 (30.4,135.1) 57.8 (23.8,135.2) 62.8 (21.3,159.6) 0.290
ALT, U/L 39.0 (28.4,54.2) 42.0 (28.1,65.0) 46.1 (31.0,77.8) 0.001
Total bilirubin, mg/dL 1.0 ± 0.4 1.0 ± 0.4 1.1 ± 0.6 0.029
LVEF, % 55.0 ± 9.8 52.5 ± 11.0 46.8 ± 12.2 < 0.001
IABP, n (%) 10 (4.0) 55(10.8) 76 (28.3) < 0.001
Thrombus aspiration, n (%) 94 (37.5) 156(30.6) 82 (30.5) 0.130
Treated vessel, n (%)
 Any left main 9 (3.6) 25 (4.9) 19 (7.1) 0.185
 Multi-vessel 21 (8.4) 62 (12.2) 27 (10.0)  
 Others 221 (88.0) 422 (82.9) 223 (82.9)  
Number of stents 1.3 ± 0.7 1.5 ± 0.8 1.4 ± 0.8 0.073
Hospital stay (days) 6 (5,7) 7 (6,10) 9 (6,14) < 0.001
In-hospital events
 Death 3 (1.2) 17 (3.3) 35 (13.0) < 0.001
 Cardiac death 3 (1.2) 13 (2.6) 25 (9.7) < 0.001
MACEs 14 (5.6) 55 (10.8) 65 (24.2) < 0.001
  1. SBP, systolic blood pressure; DBP, diastolic blood pressure; ALT, alanine transaminase; LVEF, left ventricular ejection fraction; IABP, intra-aortic balloon pump; MACEs, major adverse clinical events