Table 1.
Socio-demographics and main clinical characteristics at presentation.*
| Characteristics | Total | Males | Females | P value | ||||
|---|---|---|---|---|---|---|---|---|
| N | % | N | % | N | % | |||
| Age group | <35 | 137 | 4.2 | 110 | 4.60 | 27 | 3.30 | <0.001 |
| 36 to 45 | 308 | 9.6 | 258 | 10.80 | 50 | 6.00 | ||
| 46 to 55 | 872 | 27.0 | 705 | 29.40 | 167 | 20.20 | ||
| 56 to 65 | 1213 | 37.6 | 881 | 36.80 | 332 | 40.10 | ||
| 66 to 75 | 549 | 17.0 | 358 | 14.90 | 191 | 23.10 | ||
| >75 | 145 | 4.5 | 85 | 3.50 | 60 | 7.30 | ||
| Residence | Urban | 1560 | 48.4 | 1188 | 49.60 | 372 | 45.00 | 0.051 |
| Rural | 990 | 30.7 | 727 | 30.30 | 263 | 31.80 | ||
| Urban - Rural | 674 | 20.9 | 482 | 20.10 | 192 | 23.20 | ||
| Level of education | Primary | 576 | 17.9 | 373 | 15.60 | 203 | 24.50 | <0.001 |
| Secondary | 1009 | 31.3 | 764 | 31.90 | 245 | 29.60 | ||
| High school/college | 1309 | 40.6 | 1130 | 47.10 | 179 | 21.60 | ||
| None | 330 | 10.2 | 130 | 5.40 | 200 | 24.20 | ||
| Initial diagnosis | UA | 735 | 22.9 | 494 | 20.70 | 241 | 29.50 | <0.001 |
| NSTEMI | 940 | 29.3 | 660 | 27.60 | 280 | 34.30 | ||
| STEMI | 1529 | 47.7 | 1234 | 51.70 | 295 | 36.20 | ||
| History of AMI | History of AMI | 539 | 17.0 | 425 | 18.00 | 114 | 14.00 | 0.01 |
| Presenting symptoms | Chest pain | 3078 | 96.1 | 2315 | 96.80 | 763 | 93.80 | <0.001 |
| Dyspnea | 1787 | 55.7 | 1252 | 52.40 | 535 | 65.50 | <0.001 | |
| Cardiac arrest | 94 | 2.9 | 74 | 3.10 | 20 | 2.50 | 0.349 | |
| Palpitation | 433 | 13.5 | 307 | 12.90 | 126 | 15.50 | 0.06 | |
*Percentages are calculated based on the total valid entries into the electronic CRFs. AMI=Acute myocardial infarction; NSTEMI=Non-ST segment elevation myocardial infarction; STEMI=ST-segment elevation myocardial infarction; UA=Unstable angina