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Table 1 Characteristics of study participants by atrioventricular block status

From: Prevalence and risk factors of atrioventricular block among 15 million Chinese health examination participants in 2018: a nation-wide cross-sectional study

 

Overall

Without AV block

Participants with AV block

All

First degree

Second degree

Third degree

N

15,181,402

15,092,560

88,842

86,153

2249

440

Age, years

 18–39

7,609,253 (50.1)

7,588,277 (50.3)

20,976 (23.6)

20,072 (23.3)

784 (34.9)

120 (27.3)

 40–59

5,896,375 (38.8)

5,859,173 (38.8)

37,202 (41.9)

36,302 (42.1)

750 (33.3)

150 (34.1)

 ≥ 60

1,675,774 (11.0)

1,645,110 (10.9)

30,664 (34.5)

29,779 (34.6)

715 (31.8)

170 (38.6)

Sex

 Men

8,079,772 (53.2)

8,013,421 (53.1)

66,351 (74.7)

64,499 (74.9)

1567 (69.7)

285 (64.8)

 Women

7,101,630 (46.8)

7,079,139 (46.9)

22,491 (25.3)

21,654 (25.1)

682 (30.3)

155 (35.2)

City size*

 Small city

4,570,409 (30.1)

4,536,248 (30.1)

34,161 (38.5)

33,106 (38.4)

873 (38.8)

182 (41.4)

 Middle city

6,094,497 (40.1)

6,058,120 (40.1)

36,377 (40.9)

35,452 (41.2)

773 (34.4)

152 (34.5)

 Big city

4,516,496 (29.8)

4,498,192 (29.8)

18,304 (20.6)

17,595 (20.4)

603 (26.8)

106 (24.1)

Heart rate, bpm

 < 60

377,629 (3.4)

372,179 (3.4)

5450 (8.3)

4931 (7.7)

360 (21.7)

159 (50.2)

 60–100

10,614,677 (95.6)

10,554,664 (95.6)

60,013 (91.2)

58,570 (91.8)

1285 (77.6)

158 (49.8)

 > 100

115,780 (1.0)

115,443 (1.0)

337 (0.5)

326 (0.5)

11 (0.7)

0

BMI, kg/m2

 < 18.5

640,013 (4.7)

638,248 (4.7)

1765 (2.2)

1646 (2.1)

92 (4.6)

27 (6.8)

 18.5–23.9

6,504,666 (47.6)

6,476,822 (47.7)

27,844 (34.6)

26,731 (34.2)

945 (46.9)

168 (42.3)

 24–27.9

4,690,273 (34.3)

4,655,934 (34.3)

34,339 (42.6)

33,456 (42.8)

730 (36.2)

153 (38.5)

 ≥ 28.0

1,825,423 (13.4)

1,808,789 (13.3)

16,634 (20.6)

16,337 (20.9)

248 (12.3)

49 (12.3)

Hypertension

 No

11,469,363 (78.1)

11,417,566 (78.2)

51,797 (60.3)

50,128 (60.2)

1442 (66.3)

227 (53.5)

 Yes

3,209,2182 (21.9)

3,175,183 (21.8)

34,099 (39.7)

33,168 (39.8)

734 (33.7)

197 (46.5)

Diabetes

 No

13,851,682 (94.9)

13,775,997 (95.0)

75,685 (87.9)

73,307 (87.8)

1990 (91.5)

388 (90.2)

 Yes

749,368 (5.1)

738,904 (5.1)

10,464 (12.1)

10,237 (12.3)

185 (8.5)

42 (9.8)

Low HDL-C

 No

9,477,347 (91.1)

9,415,791 (91.1)

61,556 (87.7)

59,759 (87.6)

1504 (90)

293 (92.7)

 Yes

925,535 (8.9)

916,866 (8.9)

8669 (12.3)

8479 (12.4)

167 (10)

23 (7.3)

High LDL-C

 No

9,700,780 (93.7)

9,635,735 (93.7)

65,045 (92.9)

63,187 (92.9)

1567 (93.9)

291 (92.4)

 Yes

651,784 (6.3)

646,837 (6.3)

4947 (7.1)

4822 (7.1)

101 (6.1)

24 (7.6)

High TC

 No

12,305,558 (91.2)

12,229,928 (91.2)

75,630 (90.3)

73,356 (90.2)

1901 (92.2)

373 (91.4)

 Yes

1,186,254 (8.8)

1,178,085 (8.8)

8169 (9.7)

7974 (9.8)

160 (7.8)

35 (8.6)

High TG

 No

11,386,284 (84.5)

11,318,687 (84.6)

67,597 (80.8)

65,443 (80.6)

1799 (87.6)

355 (87.4)

 Yes

2,082,218 (15.5)

2,066,129 (15.4)

16,089 (19.2)

15,784 (19.4)

254 (12.4)

51 (12.6)

  1. Characteristics of the participants are presented as No. (%) for categorical variables. P < 0.001 for all comparisons between participants with and without AV block
  2. AV atrioventricular, BMI body mass index, Low HDL-C high-density lipoprotein cholesterol < 1.0 mmol/L, High LDL-C low-density lipoprotein cholesterol ≥ 4.1 mmol/L, High TC total cholesterol ≥ 6.2 mmol/L, High TG triglyceride ≥ 2.3 mmol/L
  3. *City size was determined according to urban population size
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