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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