|
Variable
|
OR
|
CI 95%
|
p-value
|
Adjusted OR
|
CI 95%
|
p-value
|
|---|
|
Distal Level
|
|
Maternal age
|
|
Less than 19 years
|
1.49
|
0.99–2.32
|
0.053
|
1.04
|
0.45–2.41
|
0.921
|
|
From 20 to 34 years
|
1.00
|
–
|
–
|
1.00
|
–
|
–
|
|
Over 35 years
|
1.23
|
0.79–1.93
|
0.349
|
0.95
|
0.43–2.11
|
0.905
|
|
Education (years of study)
|
|
Less than 7 years
|
1.03
|
0.70–1.54
|
0.846
|
1.12
|
0.53–2.34
|
0.766
|
|
From 8 to 11 years
|
1.12
|
0.49–2.53
|
0.779
|
0.85
|
0.17–4.11
|
0.8
|
|
Over 12 years
|
1.00
|
–
|
–
|
1.00
|
–
|
–
|
|
Marital status
|
|
With partner
|
1.00
|
–
|
–
|
1.00
|
–
|
–
|
|
Without partner
|
1.19
|
0.88–1.63
|
0.249
|
0.70
|
0.40–1.24
|
0.226
|
|
Race
|
|
White
|
1.00
|
–
|
–
|
1.00
|
–
|
–
|
|
Black
|
1.16
|
0.48–3.10
|
0.519
|
0.91
|
0.16–5.20
|
0.912
|
|
Brown
|
0.90
|
0.66–1.23
|
0.681
|
0.90
|
0.50–1.64
|
0.742
|
|
Parity
|
|
Primiparous
|
1.00
|
–
|
–
|
1.00
|
–
|
–
|
|
Multiparous
|
1.20
|
0.76–1.88
|
0.424
|
1.44
|
0.76–2.70
|
0.261
|
|
Intermediate level
|
|
Onset of prenatal care
|
|
First trimester
|
1.00
|
–
|
–
|
1.00
|
–
|
–
|
|
After first trimester
|
0.91
|
0.58–2.84
|
1.44
|
1.33
|
0.63–2.84
|
0.448
|
|
Prenatal care appointments
|
|
0 to 3 appointment
|
6.76*
|
3.89–11.73
|
< 0.001
|
3.34*
|
1.28–8.73
|
0.014
|
|
4 to 6 appointments
|
2.63*
|
1.78–3.88
|
< 0.001
|
1.17
|
0.60–2.27
|
0.640
|
|
7 or more appointments
|
1.00
|
–
|
–
|
1.00
|
–
|
–
|
|
Induction of delivery
|
|
No
|
3.84*
|
2.32–6.36
|
< 0.001
|
0.64
|
0.30–1.38
|
0.264
|
|
Yes
|
1.00
|
–
|
–
|
1.00
|
–
|
–
|
|
Type of delivery
|
|
Vaginal
|
1.00
|
–
|
–
|
1.00
|
–
|
–
|
|
Caesarean section
|
0.77
|
0.49–1.23
|
0.289
|
1.83
|
0.88–3.80
|
0.106
|
|
Proximal level
| |
|
Gestational age
|
|
Preterm
|
3.45*
|
1.86–6.39
|
< 0.001
|
3.64*
|
1.87–7.11
|
< 0.001
|
|
Term
|
1.00
|
–
|
–
|
1.00
|
–
|
–
|
|
Post-term
|
–
|
–
|
–
|
–
|
–
|
–
|
|
Sex
|
|
Female
|
1.08
|
0.65–1.82
|
0.745
|
0.87
|
0.50–1.52
|
0.630
|
|
Male
|
1.00
|
–
|
–
|
1.00
|
–
|
–
|
|
Birth weight
|
|
Low
|
18.34*
|
9.73–34.55
|
< 0.001
|
17.15*
|
8.55–34.37
|
< 0.001
|
|
Adequate
|
1.00
|
–
|
–
|
1.00
|
–
|
–
|
|
Overweight
|
0.93
|
0.21–4.06
|
0.928
|
0.98
|
0.22–4.44
|
0.994
|
|
Fetal congenital anomaly
|
|
Yes
|
22.66*
|
8.78–58.47
|
< 0.001
|
22.49*
|
7.44–67.95
|
< 0.001
|
|
No
|
1.00
|
–
|
–
|
1.00
|
–
|
–
|
|
First minute Apgar score
|
|
High
|
1.00
|
–
|
–
|
1.00
|
–
|
–
|
|
Low
|
14.51*
|
8.06–26.10
|
< 0.001
|
15.63*
|
8.23–29.67
|
< 0.001
|
- * Variables statistically associated with neonatal death
