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Table 3 Proportion of highly educated subjects (more than 12 years of education) among NAKO participants (Halle/Saale) 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

Waves (1-3)

N = 359

Home visits waves (4-5)

N = 256

Halle/Saale Census

N = 177,110

20-29

57

82.6 (72.0-89.8)

36

78.3 (64.4-87.7)

20,490

54.6 (54.1-55.1)

30-39

44

63.8 (52.0-74.1)

30

63.8 (49.5-76.0)

12,190

44.8 (44.2-45.4)

40-49

38

55.9 (44.1-67.1)

26

50.0 (36.9-63.1)

9410

29.9 (29.4-30.4)

50-59

19

31.1 (20.9-43.6)

18

38.3 (25.8-52.6)

8440

27.4 (26.9-27.9)

Above 60

37

42.5 (32.7-53.0)

16

26.2 (16.8-38.4)

16,910

33.8 (33.3-34.2)