Table 1 Baseline characteristics of AMI young and middle-aged patients stratified by living status
Variables | Total (n = 8307) | Living alone (n = 192) | Not living alone (n = 8115) | P Value |
|---|---|---|---|---|
Age, y | 51.4 (46.0-56.6) | 49.5 (44.0-55.7) | 51.4 (46.0-56.6) | 0.004 |
Female (%) | 1017 (12.2%) | 20 (10.4%) | 997 (12.3%) | 0.425 |
Diagnose | 0.345 | |||
STEMI (%) | 6705 (80.7%) | 160 (83.3%) | 6545 (80.7%) | |
NSTEMI (%) | 1602 (19.3%) | 32 (16.7%) | 1570 (19.3%) | |
Medical insurance | < 0.001 | |||
Urban insurance (%) | 4215 (50.9%) | 87 (45.3%) | 4128 (51.0%) | |
Rural insurance (%) | 2933 (35.4%) | 58 (30.2%) | 2875 (35.5%) | |
Self-paid (%) | 679 (8.2%) | 38 (19.8%) | 641 (7.9%) | |
College education (%) | 1033 (12.5%) | 25 (13.2%) | 1008 (12.5%) | 0.707 |
Body mass index (kg/m2) | 24.5 (22.9–26.4) | 24.5 (22.5–26.6) | 24.5 (22.9–26.4) | 0.833 |
Smoking (%) | 5203 (62.9%) | 127 (66.1%) | 5076 (62.8%) | 0.339 |
Diabetes (%) | 1361 (16.4%) | 19 (9.9%) | 1342 (16.6%) | < 0.001 |
Hypertension (%) | 3540 (42.7%) | 65 (33.9%) | 3475 (42.9%) | 0.021 |
Hyperlipidemia (%) | 711 (8.6%) | 12 (6.3%) | 699 (8.6%) | 0.002 |
Prior myocardial infarction (%) | 483 (5.8%) | 15 (7.8%) | 468 (5.8%) | 0.207 |
Prior heart failure (%) | 66 (0.8%) | 3 (1.6%) | 63 (0.8%) | 0.100 |
Prior PCI (%) | 386 (4.7%) | 9 (4.7%) | 377 (4.7%) | 0.956 |
Prior stroke (%) | 444 (5.4%) | 7 (3.7%) | 437 (5.4%) | 0.052 |
Prior chronic renal insufficiency (%) | 57 (0.7%) | 3 (1.6%) | 54 (0.7%) | 0.296 |
Onset-to-arrival time | 0.936 | |||
< 3 h (%) | 2107 (25.4%) | 51 (26.6%) | 2056 (25.3%) | |
3–6 h (%) | 2147 (25.9%) | 50 (26.0%) | 2097 (25.9%) | |
6–12 h (%) | 1268 (15.3%) | 32 (16.7%) | 1236 (15.2%) | |
> 12 h (%) | 2736 (33.0%) | 58 (30.2%) | 2678 (33.0%) | |
Heart failure on admission (%) | 795 (9.6%) | 25 (13.0%) | 770 (9.5%) | 0.238 |
Cardiogenic shock on admission (%) | 216 (2.6%) | 6 (3.1%) | 210 (2.6%) | 0.876 |
Cardiac arrest on admission (%) | 84 (1.0%) | 6 (3.1%) | 78 (1.0%) | 0.013 |
Killip class III or IV heart failure on admission (%) | 387 (4.7%) | 13 (6.8%) | 374 (4.6%) | 0.193 |
Heart rate on admission (n/min) | 76.0 (66.0–87.0) | 78.0 (66.0–91.0) | 76.0 (66.0–87.0) | 0.196 |
GRACE score on admission | 0.110 | |||
≤ 108 (%) | 2346 (28.2%) | 67 (34.9%) | 2279 (28.1%) | |
109–140 (%) | 3996 (48.1%) | 81 (42.2%) | 3915 (48.2%) | |
> 140 (%) | 1965 (23.7%) | 44 (22.9%) | 1921 (23.7%) | |
CK-MB (IU/L) | 2.3 (1.0-8.9) | 1.2 (1.0-29.3) | 2.3 (1.0-8.9) | 0.715 |
TnT (ng/mL) | 1.1 (0.4–3.6) | 3.5 (3.3-4.0) | 1.1 (0.4–3.6) | 0.499 |
TnI (ng/mL) | 4.3 (0.8–16.1) | 4.3 (1.1–10.9) | 4.3 (0.8–16.1) | 0.281 |
NT-proBNP (pg/mL) | 353.0 (100.0-1046.0) | 327.7 (106.5-1334.5) | 353.5 (100.0-1041.0) | 0.069 |
First infarct-related artery | 0.694 | |||
Left main disease (%) | 1710 (51.4%) | 30 (52.6%) | 1680 (51.3%) | |
Left circumflex artery (%) | 424 (12.7%) | 9 (15.8%) | 415 (12.7%) | |
Right coronary artery (%) | 1196 (35.9%) | 18 (31.6%) | 1178 (36.0%) | |
Coronary angiography | 0.241 | |||
Single-vessel disease (%) | 1341 (40.0%) | 26 (43.3%) | 1315 (39.9%) | |
Two-vessel disease (%) | 983 (29.3%) | 12 (20.0%) | 971 (29.5%) | |
Three-vessel disease (%) | 1032 (30.8%) | 22 (36.7%) | 1010 (30.6%) | |
Reperfusion for STEMI (%) | 5561 (83.4%) | 118 (73.8%) | 5443 (83.6%) | 0.002 |
Reperfusion for NSTEMI (%) | 934 (58.7%) | 18 (56.3%) | 916 (58.8%) | 0.773 |
DAPT at discharge (%) | 7697 (95.4%) | 181 (96.8%) | 7516 (95.3%) | 0.319 |
ACEI/ARB at discharge (%) | 4566 (56.6%) | 111 (59.4%) | 4455 (56.5%) | 0.435 |
β-Blockers at discharge (%) | 5733 (71.0%) | 121 (64.7%) | 5612 (71.2%) | 0.059 |
Statins at discharge (%) | 7400 (91.7%) | 174 (93.0%) | 7226 (91.6%) | 0.480 |