Table 1 Clinical characteristics of young CHD patients from 2010 to 2014

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