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Table 3 Prevalence of the use of other vitamins and minerals by pregnant women in the 2015 Pelotas Birth Cohort perinatal study, crude and adjusted prevalence ratios and respective confidence intervals (95% CI) (N = 4270 women)

From: The use of folic acid, iron salts and other vitamins by pregnant women in the 2015 Pelotas birth cohort: is there socioeconomic inequality?

 

Crude analysis

Adjusted analysisa

P (%)

PR

95% CI

(p value)

PR

95% CI

(p value)

Ethnicity

< 0.001

  

< 0.001

 White

62.7

1

  

1

  

 Other

18.3

0.49

0.41–0.58

 

0.77

0.65–0.91

 

 Black

17.8

0.48

0.39–0.58

 

0.73

0.61–0.86

 

Education (years)

< 0.001

  

< 0.001

  ≤ 4 years

6.9

1

  

1

  

 5–8

11.7

1.70

1.10–2.64

 

1.50

0.97–2.33

 

 9–11

26.0

3.80

2.50–5.73

 

2.91

1.91–4.43

 

  ≥ 12

59.6

8.70

5.79–13.0

 

5.22

3.44–7.93

 

Family Income b

< 0.001

  

< 0.001

  ≤ 1

10.8

1

  

1

  

 1.1–3.0

20.9

1.94

1.47–2.56

 

1.37

1.04–1.80

 

 3.1–6.0

40.2

3.73

2.84–4.90

 

1.86

1.41–2.44

 

 6.1–10.0

67.2

6.23

4.74–8.20

 

2.37

1.78–3.15

 

  > 10.0

70.2

6.51

4.95–8.55

 

2.35

1.76–3.10

 
  1. a Model adjusted for ethnicity, family income and years of education
  2. b Monthly minimum wage in 2015 (R$788 or $201)
  3. Pelotas, RS, Brazil, 2015