Table 1.
Clinical characteristics of young CHD patients from 2010 to 2014
| Variable | 2010 (n = 804) |
2011 (n = 930) |
2012 (n = 1045) |
2013 (n = 1241) |
2014 (n = 1268) |
P |
|---|---|---|---|---|---|---|
| Age | 40.4 ± 4.2 | 40.6 ± 4.1 | 40.7 ± 4.2 | 40.8 ± 4.2 | 40.8 ± 4.2 | NS |
| Male (%) | 766 (91.2) | 876 (94.2) | 983 (94.1) | 1146 (92.3) | 1184 (93.4) | NS |
| SBP (mmHg) | 123.9 ± 16.9 | 124.8 ± 16.9 | 123.9 ± 14.9 | 123.7 ± 15.3 | 123.5 ± 15.5 | NS |
| DBP (mmHg) | 78.2 ± 12.4 | 77.9 ± 12.1 | 77.0 ± 11.2 | 77.9 ± 11.4 | 77.6 ± 11.9 | NS |
| HR | 72.8 ± 11.8 | 72.4 ± 11.7 | 72.1 ± 11.2 | 74.3 ± 12.7 | 72.0 ± 11.0 | 0.000 |
| BMI | 27.9 ± 3.1 | 27.9 ± 3.2 | 27.7 ± 3.2 | 28.1 ± 3.1 | 27.6 ± 3.4 | 0.002 |
| Risk factor | ||||||
| Hypertension (%) | 342 (40.7) | 379 (40.7) | 496 (47.5) | 498 (40.1) | 529 (41.7) | 0.005 |
| Diabetes (%) | 171 (20.3) | 182 (19.6) | 238 (22.7) | 324 (26.1) | 284 (22.4) | 0.006 |
| Hyperlipidemia (%) | 230 (27.3) | 244 (26.2) | 371 (35.5) | 362 (29.1) | 453 (35.7) | 0.000 |
| Smoke (%) | 502 (59.7) | 572 (61.5) | 646 (61.8) | 710 (57.2) | 728 (57.4) | 0.020 |
| Alcohol use (%) | 210 (25.0) | 255 (27.4) | 325 (31.1) | 323 (26.0) | 317 (25.0) | 0.014 |
| Geographical differences | ||||||
| City area (%) | 543 (67.5) | 605 (65.1) | 651 (65.2) | 857 (69.1) | 843 (66.5) | NS |
| Scholarship | 0.000 | |||||
| High (%) | 436 (51.9) | 466 (50.1) | 594 (56.8) | 735 (59.2) | 744 (58.7) | |
| Middle (%) | 269 (32.0) | 369 (39.7) | 331 (31.7) | 376 (30.3) | 384 (30.3) | |
| Low (%) | 99 (11.8) | 95 (10.2) | 120 (11.5) | 130 (10.5) | 140 (11.0) | |
| Diagnosis | 0.000 | |||||
| SA | 24 (2.8) | 21 (2.2) | 18 (1.7) | 27 (2.1) | 13 (1.0) | 0.024 |
| UA | 394 (46.9) | 505 (54.3) | 566 (54.1) | 706 (56.8) | 723 (57.0) | 0.003 |
| NSTEMI | 325 (38.7) | 350 (37.6) | 340 (32.5) | 389 (31.3) | 364 (28.7) | 0.000 |
| STEMI | 52 (6.2) | 41 (4.4) | 104 (9.9) | 99 (7.9) | 151 (11.9) | 0.000 |
| ICM | 9 (1.1) | 13 (1.4) | 17 (1.6) | 20 (1.6) | 17 (1.3) | NS |
| Proportion of young CAD the total hospitalized patients (%) | 5.4 | 5.8 | 5.7 | 6.9 | 7.2 | 0.000 |
| Proportion of young CAD in the total Cardiac clinic (%) | 2147 (1.2) | 2085 (1.1) | 2283 (1.2) | 3279 (1.5) | 3732 (1.7) | 0.000 |
Abbreviations: SBP systolic blood pressure, DBP diastolic blood pressure, HR heart rate, BMI body mass index, SA stable angina, UA unstable angina, NSTEMI non-ST-segment myocardial infarction, STEMI ST-segment elevation myocardial infarction, ICM ischemic cardiomyopathy, NS not significant