Twin Pregnancy in Brazil: A Profile Analysis Exploring Population Information from the National Birth E-Registry on Live Births
Table 6
Factors independentlyassociated with a 5 min Apgar score below 7 among neonates from twin pregnancies: stepwise multiple analyses by nonconditional logistic regression, Brazil, SINASC 2011-2014.
Variables [n=58 850]
Apgar score
95% CI
p-value
Number of prenatal visits <7
Both <7
2.378
1.898-2.978
<0.0001
1st <7
1.767
1.489-2.097
<0.0001
2nd <7
1.517
1.294-1.780
<0.0001
Gestational age <32 weeks
Both <7
30.772
21.901-43.236
<0.0001
1st <7
10.657
8.438-13.460
<0.0001
2nd <7
8.029
6.465-9.972
<0.0001
Gestational age 32-36 weeks
Both <7
2.453
1.709-3.521
<0.0001
1st <7
2.134
1.717-2.653
<0.0001
2nd <7
2.006
1.656-2.431
<0.0001
Intrapartum cesarean
Both <7
1.266
1.012-1.584
0.0393
1st <7
0.954
0.803-1.133
0.5918
2nd <7
1.249
1.060-1.471
0.0079
Cesarean for the 2nd twin
Both <7
1.977
0.472-8.287
0.3510
1st <7
1.115
0.272-4.565
0.8798
2nd <7
16.270
10.409-25.432
<0.0001
Vaginal birth for both
Both <7
3.440
2.488-4.754
<0.0001
1st <7
1.631
1.190-2.235
0.0023
2nd <7
2.518
1.915-3.312
<0.0001
Predictors entering the models: maternal age, schooling, marital status, parity, number of previous cesarean sections, number of prenatal visits, place of birth, gestational age at birth, onset of labor, mode of delivery, ethnicity, and HDI.
