|
Characteristic
|
Model 1a
|
Model 2b
|
Model 3c
|
Final Modeld
|
|---|
|
ORe
|
95 % CIf
|
p
|
ORe
|
95 % CIf
|
p
|
ORe
|
95 % CIf
|
p
|
ORe
|
95 % CIf
|
p
|
|---|
|
Maternal age (years)
|
|
12–19
|
0.71
|
0.48–1.06
| |
0.96
|
0.60–1.52
| | | | | | | |
|
20–34
|
1
| | |
1
| | | | | | | | |
|
35 and over
|
1.93
|
1.25–2.97
|
0.001
|
1.37
|
0.87–2.17
|
0.358
| | | | | | |
|
Schooling level (years)
|
|
15 or more
|
1
| | |
1
| | |
1
| | | | | |
|
11–14
|
1.96
|
0.91–4.24
| |
1.65
|
0.81–3.39
| |
1.78
|
0.85–3.73
| | | | |
|
8–10
|
2.49
|
1.15–5.37
| |
2.17
|
1.04–4.54
| |
2.48
|
1.15–5.33
| | | | |
|
0–7
|
2.66
|
1.04–6.78
|
0.106
|
2.07
|
0.84–5.08
|
0.185
|
2.51
|
0.99–6.36
|
0.075
| | | |
|
Skin colorg
|
|
White
|
1
| | | | | | | | | | | |
|
Mixed
|
1.15
|
0.76–1.75
| | | | | | | | | | |
|
Black
|
1.05
|
0.43–2.56
|
0.777
| | | | | | | | | |
|
Conjugal situation
|
|
With partner
|
1
| | | | | | | | | | | |
|
Without partner
|
0.97
|
0.67–1.42
|
0.893
| | | | | | | | | |
|
Primipara
|
|
No
|
1
| | |
1
| | |
1
| | | | | |
|
Yes
|
2.40
|
1.53–3.77
|
<0.001
|
2.02
|
1.26–3.25
|
0.004
|
1.45
|
0.90–2.34
|
0.131
| | | |
|
Previous C-section
|
|
0
|
1
| | |
1
| | |
1
| | | | | |
|
1
|
1.89
|
1.06–3.38
| |
1.61
|
0.91–2.88
| |
1.07
|
0.62–1.86
| | | | |
|
2 or more
|
2.64
|
1.62–4.30
|
<0.001
|
2.13
|
1.31–3.45
|
0.003
|
1.30
|
0.74–2.29
|
0.638
| | | |
|
Antenatal care
|
|
Yes
| | | |
1
| | |
1
| | |
1
| | |
|
No
| | | |
4.15
|
1.34–12.81
|
0.014
|
4.44
|
1.37–14.37
|
0.013
|
4.65
|
1,51–14.31
|
0007
|
|
Number of services before admission to delivery care
|
|
0
| | | |
1
| | |
1
| | |
1
| | |
|
1
| | | |
1.50
|
0.84–2.68
| |
1.57
|
0.89–2.75
| |
1.69
|
0.98–2.92
| |
|
2 or more
| | | |
3.88
|
1.84–8.18
|
0.002
|
4.05
|
1.92–8.54
|
<0.001
|
4.49
|
2.12–9.52
|
<0.001
|
|
Clinical or obstetric complicationsh
|
|
No
| | | |
1
| | |
1
| | |
1
| | |
|
Yes
| | | |
10.28
|
7.51–14.06
|
<0.001
|
9.26
|
6.66–12.87
|
<0.001
|
9.29
|
6.69–12.90
|
<0.001
|
|
Type of delivery
|
|
Vaginal
| | | | | | |
1
| | |
1
| | |
|
Elective C-section
| | | | | | |
2.67
|
1.70–4.18
| |
2.54
|
1.67–3.88
| |
|
Intrapartum C-section
| | | | | | |
1.02
|
0.53–1.94
| |
1.05
|
0.54–2.03
| |
|
Forceps
| | | | | | |
9.08
|
3.92–21.06
|
<0.001
|
9.37
|
4.01–21.91
|
<0.001
|
-
aModel 1 = analyses were adjusted for age, schooling level, self-reported skin color, conjugal situation, parity and number of previous C-sections;bModel 2 = analyses were adjusted for age, schooling level, parity, number of previous C-sections, antenatal care, diagnoses of clinical or obstetric emergencies, number of services searched before admission to delivery care; cModel 3 = analyses were adjusted for schooling level, parity, number of previous C-sections, antenatal care, diagnoses of clinical or obstetric emergencies, number of services searched before admission to delivery care and type of delivery; dFinal Model = analyses were adjusted for antenatal care, diagnoses of clinical or obstetric emergencies, number of services searched before admission to delivery care and type of delivery; eOR = odds ratio; fCI = confidence interval; gPregnant women with East Asian or indigenous skin color were excluded from this analysis; hWomen who presented with one of the following criteria were considered to present clinical or obstetric complications: hypertensive disorders, diabetes, placenta previa, placental abruption, HIV infection and other maternal infections
