Table 2. Independent predictors of new-onset acute myocardial infarction.
| Variables | AMI | STEMI | NSTEMI | ||||||
|---|---|---|---|---|---|---|---|---|---|
| N (%) | AHRa (95% CI) | P-value | N (%) | AHRa (95% CI) | P-value | N (%) | AHRa (95% CI) | P-value | |
| Age Group | |||||||||
| <40 y/o | 35 (0.04%) | 1.00 | 20 (0.02%) | 1.00 | 15 (0.02%) | 1.00 | |||
| 40-50 y/o | 136 (0.20%) | 4.38 (3.02–6.35) | <0.001* | 56 (0.08%) | 3.21 (1.92–5.35) | <0.001* | 80 (0.12%) | 5.80 (3.34–10.09) | <0.001* |
| 50-60 y/o | 281 (0.38%) | 7.80 (5.48–11.10) | <0.001* | 93 (0.13%) | 4.88 (3.00–7.94) | <0.001* | 188 (0.26%) | 12.10 (7.14–20.49) | <0.001* |
| ≧60 y/o | 1155 (1.14%) | 17.35 (12.34–24.40) | <0.001* | 289 (0.29%) | 9.89 (6.22–15.74) | <0.001* | 866 (0.85%) | 33.67 (20.12–56.35) | <0.001* |
| Gender | |||||||||
| Female | 570 (0.33%) | 1.00 | 119 (0.07%) | 1.00 | 451 (0.26%) | 1.00 | |||
| Male | 1037 (0.69%) | 1.99 (1.80–2.21) | <0.001* | 339 (0.23%) | 3.30 (2.68–4.07) | <0.001* | 698 (0.46%) | 1.80 (1.60–2.03) | <0.001* |
| GERD | |||||||||
| No | 1236 (0.46%) | 1.00 | 359 (0.13%) | 1.00 | 877 (0.33%) | 1.00 | |||
| Yes | 371 (0.68%) | 1.48 (1.31–1.66) | <0.001* | 99 (0.18%) | 1.22 (0.97–1.53) | 0.086 | 272 (0.50%) | 1.33 (1.15–1.53) | <0.001* |
| Hypertension | |||||||||
| No | 938 (0.33%) | 1.00 | 293 (0.10%) | 1.00 | 645 (0.23%) | 1.00 | |||
| Yes | 669 (1.53%) | 1.70 (1.52–1.89) | <0.001* | 165 (0.38%) | 1.70 (1.38–2.11) | <0.001* | 504 (1.15%) | 1.79 (1.57–2.03) | <0.001* |
| Diabetes | |||||||||
| No | 1258 (0.41%) | 1.00 | 387 (0.13%) | 1.00 | 871 (0.28%) | 1.00 | |||
| Yes | 349 (2.11%) | 2.02 (1.78–2.30) | <0.001* | 71 (0.43%) | 1.63 (1.24–2.15) | <0.001* | 278 (1.68%) | 2.48 (2.14–2.87) | <0.001* |
| Hyperlipidemia | |||||||||
| No | 1357 (0.44%) | 1.00 | 399 (0.13%) | 1.00 | 958 (0.31%) | 1.00 | |||
| Yes | 250 (1.69%) | 1.59 (1.38–1.83) | <0.001* | 59 (0.40%) | 1.43 (1.07–1.91) | 0.017* | 191 (1.29%) | 1.48 (1.25–1.75) | <0.001* |
| Congestive Heart Failure | |||||||||
| No | 1569 (0.49%) | 1.00 | 451 (0.14%) | 1.00 | 1118 (0.35%) | 1.00 | |||
| Yes | 38 (2.09%) | 1.49 (1.08–2.06) | 0.016* | 7 (0.38%) | 1.29 (0.61–2.73) | 0.508 | 31 (1.70%) | 1.90 (1.32–2.74) | 0.001* |
| Ischemic Stroke | |||||||||
| No | 1556 (0.49%) | 1 | 445 (0.14%) | 1 | 1111 (0.35%) | 1 | |||
| Yes | 51 (1.51%) | 0.86 (0.65–1.14) | 0.297 | 13 (0.39%) | 1.04 (0.59–1.82) | 0.899 | 38 (1.13%) | 1.02 (0.73–1.41) | 0.927 |
a Cox's proportional hazards model; AMI, acute myocardial infarction; STEMI, ST elevation acute myocardial infarction; NSTEMI, Non-ST elevation acute myocardial infarction; AHR, adjusted hazard ratio; CI, confidence interval.
*P-value < 0.05 was considered statistically significant after test.