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Table 2 Associations between SES and birth outcomes. 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
  BRUSSELS (N=97 844) MONTREAL (N=214 589)
  % ORs (95% CI) adjusted ORs* % ORs (95% CI) adjusted ORs*
Maternal education       
High 4.08 1 1 3.66 1 1
Intermediate 4.81 1.18 (1.10-1.29)a 1.16 (1.05-1.26) b 4.50 1.24 (1.17-1.30)a 1.26 (1.19-1.33)a
Low 4.80 1.19 (1.09-1.28)a 1.20 (1.09-1.32)a 5.86 1.64 (1.56-1.72)a 1.67 (1.58-1.77)a
Income Quintile       
Top 3.72 1 1 3.63 1 1
Fourth 4.59 1.24 (1.09-1.42)b 1.18 (1.03-1.35)c 4.25 1.18 (1.10-1.26)a 1.08 (1.01-1.16)c
Middle 4.83 1.31 (1.16-1.49)a 1.21 (1.05-1.38)b 4.58 1.27 (1.19-1.36)a 1.15 (1.07-1.23)a
Second 4.49 1.22 (1.07-1.37)b 1.15 (1.01-1.32)c 4.69 1.31 (1.22-1.40)a 1.14 (1.05-1.21)a
Bottom 4.66 1.26 (1.13-1.41)a 1.12 (0.98-1.27) 5.35 1.50 (1.40-1.60)a 1.29 (1.20-1.38)a
  PRETERM
  BRUSSELS (N=95 490) MONTREAL (N=214 587)
  % ORs (95% CI) adjusted ORs* % ORs (95% CI) adjusted ORs*
Maternal education       
High 4.68 1 1 4.77 1 1
Intermediate 5.38 1.16 (1.07-1.25)a 1.12 (1.03-1.22)b 5.95 1.26 (1.21-1.32)a 1.28 (1.22-1.34)a
Low 5.40 1.16 (1.08-1.25)a 1.14 (1.03-1.23)b 7.40 1.59 (1.52-1.67)a 1.60 (1.52-1.68)a
Income       
Top 4.46 1 1 5.10 1 1
Fourth 5.07 1.14 (1.01-1.29)c 1.11 (0.97-1.26) 5.57 1.09 (1.03-1.16)b 1.01 (0.95-1.07)
Midlle 5.15 1.16 (1.03-1.30)c 1.11 (0.97-1.25) 5.97 1.18 (1.11-1.25)a 1.07 (1.01-1.14)c
Second 5.08 1.15 (1.02-1.28)c 1.08 (0.95-1.23) 6.05 1.20 (1.13-1.27)a 1.04 (0.98-1.11)
Bottom 5.28 1.19 (1.08-1.32)b 1.07 (0.95-1.21) 6.50 1.29 (1.22-1.37)a 1.13 (1.06-1.20)a
  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