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Table 2 Baseline characteristics of the study populations

From: Community-level socioeconomic inequality in the incidence of ischemic heart disease: a nationwide cohort study

Variables

Total

(N = 356,126)

Community level SES

p value*

p for trend

Low

(N = 109,632)

Medium

(N = 117,936)

High

(N = 128,558)

Age group, n (%)

    

<.001

0.758

 20~29

42,875 (12.0)

12,801 (11.7)

14,058 (11.9)

16,016 (12.5)

  

 30~39

77,245 (21.7)

22,052 (20.1)

27,256 (23.1)

27,937 (21.7)

  

 40~49

98,444 (27.6)

31,356 (28.6)

34,306 (29.1)

32,782 (25.5)

  

 50~59

73,530 (20.7)

23,945 (21.8)

22,359 (19.0)

27,226 (21.2)

  

 60~69

40,605 (11.4)

12,541 (11.4)

12,473 (10.6)

15,591 (12.1)

  

 70~79

19,061 (5.4)

5635 (5.1)

6190 (5.3)

7236 (5.6)

  

 80~

4366 (1.2)

1302 (1.2)

1294 (1.1)

1770 (1.4)

  

Sex, n (%)

    

<.001

0.135

 Male

180,598 (50.7)

54,738 (49.9)

61,160 (51.9)

64,700 (50.3)

  

 Female

175,528 (49.3)

54,894 (50.1)

56,776 (48.1)

63,858 (49.7)

  

Smoking Ever, n (%)

120,972 (34.0)

36,648 (33.4)

41,879 (35.5)

42,445 (33.0)

<.001

0.006

Body mass index (kg/m2), mean (SD)

23.4 (3.2)

23.4 (3.2)

23.4 (3.3)

23.3 (3.2)

<.001

0.001

Co-morbidities

 Diabetes mellitus, n (%)

28,745 (8.1)

8764 (8.0)

9321 (7.9)

10,660 (8.3)

0.001

0.006

 Hypertension, n (%)

61,831 (17.4)

18,737 (17.1)

20,092 (17.0)

23,002 (17.9)

<.001

<.001

 Dyslipidemia, n (%)

25,689 (7.2)

7745 (7.1)

8161 (6.9)

9783 (7.6)

<.001

<.001

 Peripheral arterial disease, n (%)

5560 (1.6)

1829 (1.7)

1728 (1.5)

2003 (1.6)

0.001

0.044

 Stroke, n (%)

6728 (1.9)

2098 (1.9)

2196 (1.9)

2434 (1.9)

0.658

0.745

 Individual economic status (Medical premium: won), mean (SD)

77,526.1 (56,833.9)

72,459.8 (54,259.6)

78,492.6 (56,319.4)

80,960.0 (59,100.8)

<.001

<.001

  1. * p-value by the chi-square test or ANOVA