Sociodemographic Study sample Study sample MBRN 2017* MBRN 2017*
n=8,401 (%) n= 56,553 (%)
Maternal age
Mean (SD) 29.9 5.0 30.9 4.9
<19 60 0.7 500 0.8
20-24 940 11.3 5,872 10.4
25-29 2,904 34.8 18,672 33.0
30-34 2,944 35.3 19,943 35.3
35-39 1,257 15.1 9,429 16.7
>40 233 2.8 2,137 3.8
Education
No higher education 1,805 22.1
Higher education ≤ 4 years 3,653 44.6
Higher education > 4 years 2,727 33.3
Employment
Employed 6,701 79.9
Student 674 8.0
Unemployed 410 4.9
Other 601 7.2
Socio-economic status**
1 (Much worse) 276 3.3
2 351 4.2
3 (Average) 5,787 69.0
4 1,313 15.6
5 (Much better) 667 7.9
Marital Status
Married or in a relationship, cohabiting 7,863 93.7 52,984 93.7
Other 533 6.3 3,568 6.3
Obstetric characteristics Study sample Study sample MBRN 2017* MBRN 2017*
n=8,401 (%) n=56,553 (%)
Place of birth
Obstetric unit*** 7,673 91.3 52,693 93.2
Alongside midwifery unit**** 485 5.8 3,000 5.3
Freestanding midwifery unit 69 0.8 387 0.7
Planned homebirth 132 1.6 126 0.2
Born before arrival 38 0.5 347 0.6
Parity
Nulliparous 3,772 45.0 23,841 42.2
Multiparous 4,606 55.0 32,712 57.8
Mode of birth*****
Spontaneous vaginal delivery 6,240 74.4 42,075 73.7
Instrumental vaginal delivery***** 907 10.8 5,968 10.3
Caesarean section (emergency) 828 9.9 5,870 10.4
Caesarean section (planned) 407 4.9 3,159 5.6