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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