|
MATERNAL SOCIO-DEMOGRAPHIC CHARACTERISTICS
|
|
Maternal age (+ 5 years)a
|
0.94
|
0.91–0.98
|
0.90
|
0.82–0.98
|
0.99
|
0.97–1.00
|
0.96
|
0.87–1.00
|
|
Completed secondary education
|
1.21
|
1.06–1.38
|
1.21
|
0.87–1.69
|
0.98
|
0.94–1.02
|
0.94
|
0.75–1.15
|
|
Identifies as Aboriginal/Torres Strait Islander
|
1.01
|
0.70–1.33
|
0.94
|
0.56–2.31
|
0.91
|
0.69–1.00
|
0.80
|
0.27–1.08
|
|
Area of residence
|
|
Major city
|
1.00
| |
1.00
| |
1.00
| |
1.00
| |
|
Inner regional
|
1.05
|
0.96–1.14
|
1.31
|
1.05–1.69
|
1.00
|
0.98–1.02
|
1.02
|
0.94–1.15
|
|
Outer regional
|
1.06
|
0.97–1.16
|
1.75
|
1.33–2.44
|
1.00
|
0.97–1.02
|
1.05
|
0.98–1.22
|
|
Remote/very remote
|
0.94
|
0.74–1.16
|
1.59
|
0.91–3.86
|
1.03
|
1.00–1.08
|
1.01
|
0.77–1.23
|
|
PREGNANCY DETAILS/COMPLICATIONS
|
|
Parity
|
|
Multiparous – no previous CS
|
1.00
| |
1.00
| |
1.00
| |
1.00
| |
|
Multiparous – previous CS
|
0.38
|
0.32–0.45
|
0.64
|
0.50–0.82
|
0.55
|
0.28–0.81
|
0.72
|
0.32–0.98
|
|
Primiparous
|
0.81
|
0.74–0.88
|
0.53
|
0.41–0.68
|
0.79
|
0.59–0.93
|
0.66
|
0.32–0.93
|
|
Multiple birth
|
0.47
|
0.28–0.70
|
0.50
|
0.32–0.87
|
0.06
|
0.00–0.56
|
–
| |
|
Pre-pregnancy BMI (+ 5 kg/m2)b
|
0.96
|
0.93–0.98
|
1.00
|
0.96–1.05
|
1.00
|
1.00–1.01
|
1.02
|
1.00–1.09
|
|
Gestational age (+ 1 week)c
|
0.95
|
0.92–0.97
|
0.95
|
0.91–0.99
|
1.00
|
0.99–1.00
|
0.97
|
0.91–1.00
|
|
Gestational diabetes
|
0.70
|
0.59–0.82
|
0.94
|
0.70–1.35
|
0.97
|
0.90–1.01
|
1.03
|
0.87–1.25
|
|
High blood pressure
|
0.51
|
0.42–0.60
|
0.73
|
0.57–0.96
|
1.02
|
0.99–1.06
|
0.95
|
0.72–1.07
|
|
Low lying placenta
|
0.88
|
0.76–1.00
|
0.80
|
0.62–1.05
|
0.98
|
0.92–1.01
|
1.02
|
0.87–1.19
|
|
Other risk factors
|
0.76
|
0.69–0.82
|
1.15
|
0.97–1.40
|
1.00
|
0.97–1.01
|
1.00
|
0.91–1.08
|
|
ANTENATAL AND INTRAPARTUM CARE
|
|
Model of care
|
|
Private obstetric care
|
1.00
| |
1.00
| |
1.00
| |
1.00
| |
|
Standard public care
|
1.40
|
1.29–1.54
|
1.35
|
1.07–1.77
|
1.00
|
0.97–1.02
|
1.09
|
1.01–1.83
|
|
GP shared care
|
1.48
|
1.35–1.62
|
1.67
|
1.32–2.24
|
1.02
|
1.00–1.05
|
1.08
|
1.00–1.32
|
|
Public midwifery continuity care
|
1.66
|
1.50–1.86
|
1.57
|
1.20–2.18
|
1.02
|
1.00–1.07
|
1.07
|
1.00–1.31
|
|
Private midwifery care
|
1.93
|
1.64–2.25
|
3.35
|
0.96–109.68
|
1.03
|
0.98–1.09
|
1.14
|
1.01–1.58
|
|
Known care providers – labour/birth
|
|
None of them
|
1.00
| |
1.00
| |
1.00
| |
1.00
| |
|
Some of them
|
–
| |
0.76
|
0.63–0.91
|
0.95
|
0.87–0.98
|
0.96
|
0.83–1.03
|
|
All of them
|
–
| |
1.36
|
0.84–2.76
|
1.01
|
0.97–1.06
|
1.07
|
0.95–1.34
|
|
Continuity of care during labour/birth
|
–
| |
1.45
|
1.21–1.78
|
1.02
|
1.00–1.05
|
1.03
|
0.98–1.16
|
|
Felt rushed/hurried during labour
|
–
| |
1.19
|
0.92–1.60
|
0.94
|
0.84–0.99
|
1.09
|
1.00–1.38
|
|
LABOUR/BIRTH EXPERIENCE
|
|
Augmentation of labour
|
|
Yes
|
1.00
| |
1.00
| |
1.00
| |
1.00
| |
|
No
|
–
| |
2.72
|
2.15–3.56
|
1.01
|
0.99–1.03
|
1.05
|
1.00–1.19
|
|
Not sure
|
–
| |
1.31
|
0.85–2.36
|
0.93
|
0.78–1.00
|
0.91
|
0.52–1.12
|
|
Had continuous fetal monitoring
|
–
| |
0.47
|
0.35–0.63
|
0.92
|
0.82–0.98
|
0.95
|
0.80–1.02
|
|
Freedom of movement throughout labour
|
–
| |
1.54
|
1.20–2.01
|
1.02
|
1.00–1.06
|
1.08
|
0.99–1.35
|
|
Water immersion during labour
|
–
| |
1.05
|
0.85–1.36
|
1.00
|
0.98–1.02
|
1.03
|
0.96–1.16
|
|
Birth outside business hours
|
–
| |
–
| |
1.01
|
0.99–1.03
|
1.01
|
0.93–1.10
|
|
Non-supine position during birth
|
–
| |
–
| |
–
| |
1.11
|
1.01–1.41
|
