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Table 2 Baseline characteristics of patients in the CCN database

From: Routine clinical care data from thirteen cardiac outpatient clinics: design of the Cardiology Centers of the Netherlands (CCN) database

Variable

Whole database

n = 109,151

Women

n = 56,628

Men

n = 52,524

Missing data (%)

General

 Women (n, %)

56,628 (51.9)

   

 Age (years)

56 (15)

57 (15)

56 (15)

 

 Age categories (n, %)

  Under 50

33,165 (30.4)

16,954 (29.9)

16,211 (30.9)

 

  50–64

41,273 (37.8)

20,859 (36.8)

20,414 (38.9)

 

  65–74

22,931 (21.0)

12,152 (21.5)

10,779 (20.5)

 

  75 and older

11,781 (10.8)

6662 (11.8)

5119 (9.7)

 

 Body mass index (kg/m2)

27.4 (20.0)

27.3 (20.2)

27.5 (19.8)

2.9

 Systolic blood pressure (mmHg)

141 (22)

140 (23)

143 (20)

2.9

 Current smoker (n,%)

40,139 (36.8)

20,712 (36.6)

19,427 (37)

8.9

 Ever smoker (n,%)

71,659 (65.7)

35,508 (62.7)

36,151 (68.8)

8.8

Cardiovascular disease (CVD) (n, %)

 History of CVDa

16,311 (14.9)

6,483 (11.4)

9,828 (18.7)

 

 Family history of CVDb

71,148 (65.2)

39,318 (69.4)

31,830 (60.6)

17.8

 History of other cardiovascular conditionsc

23,957 (21.9)

11,804 (20.8)

12,153 (23.1)

 

Comorbidities (n, %)

 Hypertension

32,460 (29.7)

17,290 (30.5)

15,270 (28.9)

2.5

 Dyslipidaemia

16,978 (15.6)

8148 (14.4)

8830 (16.8)

2.5

 Diabetes mellitus

8709 (8.0)

3967 (7.0)

4742 (9.0)

2.6

 Number of comorbidities

  0

64,199 (58.8)

33,799 (59.9)

30,400 (57.9)

 

  1

28,705 (26.3)

15,081 (26.6)

13,624 (25.9)

 

  2

11,001 (10.1)

5392 (9.5)

5609 (10.7)

 

  3

2382 (2.2)

1125 (2.0)

1257 (2.4)

 
  1. All values are given as mean (SD) unless otherwise specified
  2. aHistory of CVD = diagnosis of heart failure, coronary heart disease, cerebrovascular disease or congenital heart disease before baseline appointment, or invasive cardiac intervention
  3. bFamily history of CVD = family history of atherosclerosis, sudden death, cardiomyopathy or arrhythmia
  4. cHistory of other cardiovascular conditions = diagnosis of arrhythmia, valvular disease, cardiomyopathy, atherosclerosis, peripheral artery disease or abdominal aneurysm before baseline appointment, or non-invasive cardiac or peripheral intervention