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Table 4 Proportion of highly educated subjects (more than 12 years of education) among NAKO participants of Turkish descent (Berlin-Center) and the respective census data [22]

From: The effect of home visits as an additional recruitment step on the composition of the final sample: a cross-sectional analysis in two study centers of the German National Cohort (NAKO)

Age groups

Invitation + reminders

N = 229

Total (Invitation + Home visits)

N = 269

Berlin Census

N = 806,310

20-29

20

64.5 (46.9-78.9)

22

64.7 (47.9-78.5)

72,740

40.6 (40.3-40.8)

30-39

16

64.0 (44.5-79.8)

16

59.3 (40.7-75.5)

74,670

36.1 (35.9-36.3)

40-49

29

34.5 (25.2-45.2)

31

32.0 (23.5-41.8)

47,850

28.1 (27.9-28.3)

50-59

12

24.0 (14.3-37.4)

12

17.9 (10.6-28.7)

31,840

27.7 (27.5-28.0)

Above 60

8

26.7 (14.2-44.4)

8

24.2 (12.8-41.0)

27,960

20.7 (20.5-20.9)