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. 2018 Nov 8;8(11):e023531. doi: 10.1136/bmjopen-2018-023531

Table 1.

Maternal age, year of birth and country of origin, and offspring’s year of birth by educational level, all children born in Denmark, 2000–2009

All children n=649 905 Primary education n=106 129 Vocational education n=222 744 Secondary education n=46 026 Short-cycle and medium-cycle higher education n=185 417 Long-cycle higher education n=94 168 Missing n=15 421
% % % % % % %
Maternal age
 <25 12.3 32.6 12.2 17.8 3.8 2.3 20.0
 25–29 33.5 30.9 37.4 31.2 25.4 26.2 34.6
 30–34 36.3 23.0 34.5 32.6 42.1 46.9 28.0
 35–39 15.3 11.0 13.8 15.8 16.4 21.1 14.0
 ≥40 2.6 2.4 2.1 2.6 2.7 3.5 3.4
Maternal year of birth
 <1965 4.2 4.1 3.8 4.6 4.3 4.8 4.5
 1965–69 16.5 12.3 16.4 17.6 17.0 20.7 12.6
 1970–74 33.5 24.0 33.0 32.4 37.6 39.6 24.2
 1975–79 30.6 28.8 32.0 27.9 31.8 28.3 31.1
 ≥1980 15.2 30.8 14.8 17.6 9.8 6.7 27.7
Maternal country of origin
 Denmark 86.2 74.7 91.0 77.6 93.2 92.0 10.7
 Western countries 3.1 1.3 1.9 3.8 2.6 4.3 26.3
 Non-western countries 10.7 24.0 7.2 18.6 4.3 3.7 63.0
Year of birth (offspring)
 2000–2001 20.5 24.2 22.3 23.7 17.9 16.0 20.2
 2002–2003 19.9 21.1 20.9 22.1 18.8 18.0 14.9
 2004–2005 20.0 19.6 20.1 20.1 20.6 20.0 12.6
 2006–2007 20.0 18.0 19.1 18.2 21.5 22.2 21.0
 2008–2009 19.7 17.1 17.7 15.9 21.2 23.8 31.3