Table 1.
Comparison of characteristics of patients with and without mortality in the cohort.
| Variables | Total (n = 656) | Survival (n = 565) | Death (n = 91) | P value |
|---|---|---|---|---|
| Demographic characteristics | ||||
| Sex, n (%) | 0.008 | |||
| Female | 107 (16) | 83 (15) | 24 (26) | |
| Male | 549 (84) | 482 (85) | 67 (74) | |
| Age, y | 64.00 (52, 74) | 63.00 (51, 73) | 70.00 (59, 78) | <0.001 |
| Smoking, n (%) | 453 (69) | 396 (70) | 57 (63) | 0.192 |
| Weekend on admission, n (%) | 248 (38) | 205 (36) | 43 (47) | 0.059 |
| Delay, n (%) | 167 (25) | 133 (24) | 34 (37) | 0.007 |
| Vascular risk factors | ||||
| Hypertension, n (%) | 380 (58) | 326 (58) | 54 (59) | 0.857 |
| Diabetes mellitus, n (%) | 121 (18) | 98 (17) | 23 (25) | 0.096 |
| Prior-stroke, n (%) | 35 (5) | 30 (5) | 5 (5) | 1 |
| CKD, n (%) | 152 (23) | 122 (22) | 30 (33) | 0.024 |
| Clinical data | ||||
| HR, beats/min | 80 (72, 92) | 80.00 (72, 91) | 85 (73, 106) | 0.003 |
| SBP, mmHg | 124 (108, 140) | 127 (110, 143) | 111 (92, 129) | <0.001 |
| DBP, mmHg | 80 (68, 91) | 80 (70, 92) | 74 (58, 85) | <0.001 |
| Shock_index | 0.65 (0.55, 0.77) | 0.64 (0.54, 0.75) | 0.75 (0.61, 1.04) | <0.001 |
| Electrocardiographic data | ||||
| Inferior, n (%) | 300 (46) | 263 (47) | 37 (41) | 0.351 |
| Anterior, n (%) | 322 (49) | 276 (49) | 46 (51) | 0.851 |
| Other, n (%) | 21 (3) | 16 (3) | 5 (5) | 0.194 |
| Right ventricular, n (%) | 7 (1) | 6 (1) | 1 (1) | 1 |
| Laboratory examinations on admission | ||||
| WBC, ∗109/L | 11.27 (8.60, 14.19) | 10.97 (8.34, 13.57) | 13.92 (10.56, 19.51) | <0.001 |
| Neutrophil count, ∗109/L | 8.85 (6.34, 11.83) | 8.46 (6.11, 11.19) | 11.40 (8.43, 16.26) | <0.001 |
| NLR | 6.65 (3.89, 10.77) | 6.25 (3.78, 9.85) | 9.74 (5.89, 14.93) | <0.001 |
| PLR | 149.03 (104.31, 224.60) | 148.96 (107.43, 220.27) | 151.40 (81.96, 250.07) | 0.518 |
| MLR | 0.54 (0.37, 0.82) | 0.51 (0.36, 0.76) | 0.75 (0.41, 1.12) | <0.001 |
| SIRI | 4.51 (2.63, 8.44) | 4.19 (2.47, 7.39) | 8.41 (4.38, 15.27) | <0.001 |
| SII | 1285.43 (746.84, 2247.28) | 1233.05 (735.30, 2139.17) | 1923.99 (894.50, 2898.80) | 0.003 |
| HB, g/L | 139.00 (123.00, 154.00) | 140.00 (124.00, 155.00) | 128.00 (115.00, 147.00) | 0.001 |
| RBC, ∗1012/L | 4.54 (3.98, 5.01) | 4.58 (4.05, 5.02) | 4.21 (3.71, 4.88) | 0.006 |
| PLT, ∗109/L | 205.00 (161.00, 249.25) | 207.00 (164.00, 250.00) | 196.00 (138.00, 246.50) | 0.113 |
| ALT, U/L | 33.00 (23.00, 56.00) | 32.00 (22.25, 51.75) | 56.00 (30.00, 193.00) | <0.001 |
| AST, U/L | 72.00 (36.50, 169.5) | 67.00 (35.00, 143.00) | 225.00 (73.50, 456.00) | <0.001 |
| GGT, U/L | 44.00 (27.00, 75.00) | 43.00 (27.00, 72.75) | 61.00 (29.00, 104.00) | 0.007 |
| BUN, mmol/L | 6.72 (5.25, 9.37) | 6.38 (5.09, 8.50) | 10.33 (7.45, 13.15) | <0.001 |
| Creatinine, umol/L | 101.00 (82.00, 128.00) | 98.00 (81.00, 119.00) | 134.00 (109.00, 174.50) | <0.001 |
| Uric acid, umol/L | 484.00 (449.00, 542.00) | 481.00 (447.00, 535.00) | 523.00 (461.00, 637.00) | <0.001 |
| Cystatin C, mg/L | 1.22 (0.97, 1.58) | 1.17 (0.95, 1.49) | 1.65 (1.32, 2.18) | <0.001 |
| CK, U/L | 507.00 (186.00, 1368.75) | 463.50 (172.00, 1322.50) | 745.00 (303.25, 2012.50) | 0.002 |
| CKMB, U/L | 52.00 (25.00, 127.00) | 48.00 (24.00, 117.25) | 86.00 (33.00, 190.00) | <0.001 |
| LDH, U/L | 375.00 (266.25, 639.75) | 350.50 (255.25, 556.75) | 695.50 (407.75, 1229.75) | <0.001 |
| α-HBDH, U/L | 259.00 (173.00, 475.00) | 240.00 (165.00, 427.50) | 490.50 (273.75, 773.00) | <0.001 |
| CTnT, ng/L | 1014.00 (213.50, 3480.00) | 786.95 (185.97, 3069.00) | 3077.00 (1133.00, 6711.00) | <0.001 |
| BNP, pg/mL | 1022.50 (255.15, 3860.75) | 884.90 (204.85, 2713.00) | 5349.00 (2058.00, 15267.00) | <0.001 |
| Glucose, mmol/L | 6.66 (5.56, 8.66) | 6.52 (5.44, 8.19) | 8.47 (6.41, 11.60) | <0.001 |
| Myoglobin, ng/mL | 341.10 (104.50, 910.40) | 308.95 (95.96, 820.28) | 615.00 (203.50, 2251.00) | <0.001 |
| Diseased vessel identified during procedure | ||||
| LM, n (%) | 13 (2) | 13 (2) | 0 (0) | 0.233 |
| LAD, n (%) | 213 (33) | 185 (33) | 28 (31) | 0.836 |
| LCX, n (%) | 70 (11) | 62 (11) | 8 (9) | 0.674 |
| RCA, n (%) | 157 (24) | 134 (24) | 23 (26) | 0.819 |
| Risk assessment | ||||
| GRACE, score | 125.00 (102.00, 154.00) | 121.00 (101.00, 146.00) | 178.00 (140.00, 206.50) | <0.001 |
Values are expressed as medians with interquartile ranges for continuous data. Other values are presented as numbers and percentages. Shock index: ratio of HR to SBP; SIRI: systemic inflammatory response index; SII: systemic inflammatory reaction index; PLR: ratio of platelets to lymphocytes; NLR: the ratio of neutrophils to lymphocytes; MLR: ratio of monocytes to lymphocytes; OHCA: out-of-hospital cardiac arrest; GRACE: Global Registry of Acute Coronary Events score; α-HBDH: α-hydroxybutyrate dehydrogenase; BNP: B-type natriuretic peptides.