Table 2 Demographic data for study population (cleared sample), responders and non responders.

Female

26,2%

26,7%

25,4%

General practice

37,6%

37,3%

37,9%

Internal medicine

57,2%

58,0%

56,1%

Cardiology

5,2%

4,7%

6,0%

Private practice < 5 years

6,0%

5,8%

6,3%

Private practice > 20 years

34,1%

34,4%

33,8%