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Table 1 Sociodemographic and medical characteristics of patients with coronary heart disease (CHD) (n = 1052) and an additional history of diabetes at baseline (n = 199)

From: Chlamydia pneumoniae, heat shock proteins 60 and risk of secondary cardiovascular events in patients with coronary heart disease under special consideration of diabetes: a prospective study

Characteristics Total: N % Additional history of diabetes: N %
Gender     
Male 894 84.9 151 75.9
Female 158 15.0 48 24.1
Age (years) (μ, SD) 60.0 ± 7.9   60.9 ± 6.5  
30–49 148 14.1 15 7.5
50–59 305 29.0 50 25.2
60–70 599 56.9 134 67.3
Nationality a     
German 1028 97.8 195 98.0
Other 23 2.2 4 2.0
School education     
≤ 9 years 625 59.4 132 66.3
> 9 years 427 40.6 67 33.7
Family status     
Married 883 83.9 162 81.4
Other 169 16.1 37 18.6
Smoking     
Current 48 4.6 8 4.0
Former 667 63.4 120 60.3
Never 337 32.0 71 35.7
Alcohol consumption     
Any 790 75.1 131 65.8
None 262 24.9 68 34.2
Body mass index (kg/m 2 ) b     
< 25 282 26.8 35 17.6
25–30 584 55.5 109 54.8
> 30 182 17.6 55 27.6
HDL-cholesterol (mg/dl)     
< 40 638 60.6 129 64.8
≥ 40 414 39.4 68 34.2
History of myocardial infarction 610 58.0 120 60.3
  1. a = There was one missing value for variable nationality
  2. b = There were four missing values for variable body mass index