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Table 2 The distribution of sociodemographic parameters in participants of SNiP with significance verification (*: p < 0.05; **: p < 0.01; ***: p < 0.001)

From: Chronic diseases in pregnant women: prevalence and birth outcomes based on the SNiP-study

Variable Characteristic n1 = 1141 % n2 = 4189 %+
Age*** Mean 28.1 / 27.3 /
[Years] Standard deviation 5.31 / 5.48 /
Age groups < 20 52 4.6 258 6.2
  20-34 940 82.4 3465 82.7
  ≥ 35 147 12.9 462 11
Family status Married, cohabitating 403 35.3 816 19.5
  Married, separated 11 1 34 0.8
  Unmarried 573 50.2 1397 33.3
  Divorced 33 2.9 84 2
  Widowed 1 0.1 3 0.1
Native country Yes 1114 97.6 4081 97.4
Germany No 26 2.3 102 2.4
Graduation** No graduation available 19 1.9 65 1.7
  Certificate of Secondary Education 100 9.7 521 14
  General Certificate of Secondary Education 518 50.4 1932 51.9
  Advanced technical college entrance qualification 46 4.5 165 4.4
  General qualification for university entrance 323 31.5 960 25.8
  Other graduation 19 1.9 65 1.7
  Presently still school-aged 2 0.2 16 0.4
Qualifications** Presently articled 66 6.6 188 8.3
  No qualification available 56 5.6 191 8.4
  Completed traineeship 475 47.7 1093 48.3
  Completed business school 100 10 243 10.7
  Completed technical college 82 8.2 134 5.9
  Or university of cooperative education   0   0
  Completed college of higher education 66 6.6 123 5.4
  Completed university 143 14.4 279 12.3
  Other qualification 8 0.8 13 0.6
Netto monthly Mode (1250–1749) 5 / 5 /
Income* [Euro] < 500 87 9.6 232 11.6
  500-749 75 8.3 237 11.9
  750-999 82 9.1 199 10
  1000–1249 93 10.3 225 11.3
  1250–1749 137 15.2 278 13.9
  1750–1999 79 8.7 176 8.8
  2000–2249 67 7.4 135 6.8
  2250–2499 68 7.5 146 7.3
  2500–2999 95 10.5 173 8.7
  3000–3999 88 9.7 139 7
  4000–4999 25 2.8 36 1.8
  ≥ 5000 7 0.8 21 1.1
Pregnancy Yes, pregnancy was planned 707 62 1570 37.5
Planned No, but no conception 199 17.4 517 12.3
  No, averted 117 10.3 219 5.2
  1. Footnote: + Percentages do not always add up to 100% due to missing data.