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Table 2 Prevalence of maternal smoking during pregnancy according to maternal and prenatal characteristics and public maternity

From: Smoking prevalence, reduction, and cessation during pregnancy and associated factors: a cross-sectional study in public maternities, Rio de Janeiro, Brazil

Maternal and prenatal characteristics

Maternity/City

 

A - Niterói

B - Rio de Janeiro

 

Prev.a(%)

p-value

Prev.a(%)

p-value

Age group (years)b

 

0.21

 

0.01

10 - 19

19.1

-

10.3

-

20 - 34

28.3

-

21.2

-

≥35

21.1

-

14.9

-

Partnerc

 

0.32

 

0.22

absence

28.2

-

20.2

-

presence

23.8

-

17.2

-

Skin colorc

 

0.40

 

<0.01

white

20.7

-

15.5

-

brown

27.4

-

15.1

-

black

24.6

-

24.6

-

Maternal Education Level (years of study)b

 

<0,01

 

<0.01

≥4

15.4

-

20.6

-

5-7

36.8

-

24.4

-

8-11

19.1

-

15.4

-

≥12

15.4

-

14.0

-

Family income per month (USD)b

 

0.14

 

0.04

<$88.47

27.1

-

22.8

-

$88.47 to $331.47

26.2

-

17.4

-

≥$331.47

13

-

13.2

-

Parityc

 

<0.01

 

<0.01

primiparous

11.9

-

11.1

-

multiparous

33.6

-

22.7

-

Adequacy of prenatal careb

 

<0.01

 

<0.01

Inadequate

31.1

-

20.4

-

Intermediate

21.4

-

15.9

-

Adequate

16.9

-

11.9

-

More than adequate

12.5

-

6.7

-

Total

24.8

-

17.9

-

  1. aPrevalence; bChi-square Linear Trend; cPearson’s chi-square test.
  2. Note: The sums of the frequencies of the categories for each variable are not equal due to exclusion of records with missing information or information ignored in the analysis.