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Table 3 Associations between SES and birth outcomes among natives-born women. Brussels vs Montreal

From: Associations between socioeconomic status and pregnancy outcomes: a greater magnitude of inequalities in perinatal health in Montreal than in Brussels

  LBW
  Belgian natives-born (N=39 381) Canadian natives-born (N=97 509)
  % ORs (95% CI) Adjusted ORs* % ORs (95% CI) Adjusted ORs*
Maternal education       
High 4.10 1 1 3.38 1 1
Intermediate 5.23 1.29 (1.15-1.44)a 1.23 (1.09-1.39)a 4.21 1.26 (1.16-1.36)a 1.25 (1.15-1.36)a
Low 6.27 1.56 (1.39-1.75)a 1.45 (1.23-1.66)a 6.20 1.89 (1.75-2.04)a 1.81 (1.65-1.98)a
Income quintile       
Top 3.89 1 1 3.31 1 1
Fourth 4.76 1.23 (1.05-1.44)b 1.16 (0.98-1.37) 4.01 1.22 (1.11-1.34)a 1.09 (0.98-1.20)
Middle 5.02 1.30 (1.11-1.52)b 1.16 (0.97-1.37) 4.62 1.42 (1.29-1.56)a 1.21 (1.09-1.34)a
Second 5.09 1.32 (1.13-1.55)a 1.22 (1.02-1.46)c 4.93 1.52 (1.38-1.67)a 1.23 (1.11-1.37)a
Bottom 5.59 1.46 (1.27-1.69)a 1.24 (1.05-1.48)c 5.82 1.81 (1.63-2.00)a 1.37 (1.22-1.53)a
  PRETERM
  Belgian natives-born (N=38 670) Canadian natives-born (N=97 509)
  % ORs (95% CI) Adjusted ORs* % OR’s (95% CI) Adjusted ORs*
Maternal education       
High 4.72 1 1 4.58 1 1
Intermediate 5.70 1.22 (1.09-1.35)a 1.15 (1.02-1.29)c 5.75 1.27 (1.19-1.36)a 1.28 (1.19-1.38)a
Low 6.34 1.36 (1.22-1.53)a 1.23 (1.07-1.41)b 7.70 1.74 (1.63-1.86)a 1.69 (1.57-1.83)a
Income quintile       
Top 4.55 1 1 4.86 1 1
Fourth 5.16 1.14 (0.98-1.32) 1.10 (0,94-1.28) 5.66 1.17 (1.08-1.27)a 1.05 (0.96-1.14)
Middle 5.20 1.15 (0.99-1.34) 1.07 (0.91-1.25) 5.88 1.22 (1.13-1.33)a 1.06 (0.97-1.15)
Second 5.58 1.24 (1.06-1.44)c 1.16 (0.97-1.37) 6.22 1.30 (1.19-1.41)a 1.07 (0.98-1.17)c
Bottom 5.84 1.30 (1.13-1.49)a 1.22 (1.03-1.44)c 6.87 1.44 (1.32-1.58)a 1.13 (1.02-1.25)c
  1. *ORs adjusted for income, education, marital status, parity, mother’s age, and child’s sex
  2. a ≤ 0.001; b ≤ 0.01; c ≤ 0.05