Table 1 Participant characteristics

Age, M (SD)

29.4 (3.5)

Level of education, number

 School less than year 12

2

 Year 12 or vocational equivalent

5

 Tertiary

13

 Unknown

1

Onset of labour, number

 Spontaneous

5

 Augmented

4

 Induced

12

Birth outcomes, number

 Normal vaginal birth (unassisted)

10

 Instrumental vaginal birth (vacuum/forceps)

4

 Unplanned caesarean section

7

Pregnancy risk level, number

 High

8

 Low

13