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

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