Table 3 Crude and adjusted odds ratio obtained through logistic regression analysis for the association between Acute Respiratory Distress (ARD) during pregnancy and fetal deaths. Bahia, Brazil, Jan 2019—Jun 2021 ^a

ARD during pregnancy

 No

1

-

1

-

 Yes

3.22

2.26;4.60

4.06

2.66;6.21

Age group (years)

  ≤ 19

1

-

1

-

 20 – 35

0.89

0.81;0.99

1.12

0.99;1.27

  ≥ 36

1.34

1.18;1.54

1.57

1.34;1.84

Education (in years)

 12 or more

1

-

1

-

 08 – 11

1.22

1.05;1.41

1.11

0.95;1.31

 4 – 7

2.02

1.72;2.37

1.72

1.45;2.05

 0 – 3

6.14

5.13;7.36

4.17

3.41;5.10

Type of pregnancy

 Single fetus

1

-

1

-

 Twin fetus or more

3.11

2.64;3.66

3.88

3.20;4.70

Fetus sex

 Female

1

-

1

-

 Male

1.18

1.09;1.27

1.19

1.09;1.31

Type of delivery

 Vaginal

1

-

1

-

 Cesarean

0.44

0.39;0.47

0.43

0.38;0.47

HDI on the municipality of residence

 High or Very High (≥ 0.700)

1

-

1

-

 Medium (0.600—0.699)

1.16

1.05;1.28

0.99

0.89;1.11

 Low or Very Low (≤ 0.599)

1.25

1.13;1.39

0.97

0.86;1.10