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Table 4 Associations between SES and birth outcomes among immigrants. 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=55 333) MONTREAL (N=112 463)
  % ORs (95% CI) adjusted ORs* % ORs (95% CI) adjusted ORs*
Maternal education       
High 4.08 1 1 3.94 1 1
Intermediate 4.50 1.11 (0.98-1.24) 1.05 (0.92-1.20) 4.80 1.23 (1.15-1.32)a 1.27 (1.18-1.37)a
Low 4.12 1.01 (0.90-1.13) 1.03 (0.89-1.18) 5.62 1.45 (1.35-1.56)a 1.57 (1.45-1.69)a
Income Quintile       
Top 3.29 1 1 4.13 1 1
Fourth 4.23 1.30 (1.01-1.67)c 1.22 (0.93-1.59) 4.54 1.10 (0.99-1.22) 1.04 (0.93-1.16)
Middle 4.59 1.41 (1.13-1.76)b 1.38 (1.09-1.75)b 4.61 1.12 (1.01-1.24) 1.05 (0.94-1.17)
Second 4.10 1.26 (1.02-1.55)c 1.28 (1.01-1.61)c 4.53 1.10 (0.99-1.21) 1.00 (0.90-1.10)
Bottom 4.28 1.31 (1.08-1.60)b 1.26 (1.02-1.57)c 5.18 1.27 (1.15-1.39)a 1.16 (1.04-1.27)a
  PRETERM
  BRUSSELS (N=54 009) MONTREAL (N=112 462)
  % ORs (95% CI) adjusted ORs* % ORs (95% CI) adjusted ORs*
Maternal education       
High 4.65 1 1 4.97 1 1
Intermediate 5.16 1.11 (1.00-1.24) 1.08 (0.95-1.23) 6.19 1.26 (1.18-1.34)a 1.28 (1.20-1.36)a
Low 4.97 1.07 (0.96-1.19) 1.08 (0.95-1.23) 7.21 1.48 (1.39-1.58)a 1.53 (1.43-1.64)a
Income Quintile       
Top 4.22 1 1 5.53 1 1
Fourth 4.92 1.17 (0.93-1.48) 1.17 (0.92-1.49) 5.52 0.99 (0.91-1.09) 0.93 (0.84-1.02)
Midlle 5.08 1.21 (0.99-1.48) 1.23 (0.98-1.52) 6.14 1.12 (1.02-1.22)c 1.05 (0.96-1.15)
Second 4.76 1.13 (0.94-1.37) 1.12 (0.91-1.38) 5.97 1.08 (0.99-1.18) 0.98 (0.90-1.08)
Bottom 5.03 1.20 (1.01-1.43)c 1.11 (0.91-1.35) 6.39 1.17 (1.07-1.26)a 1.07 (0.98-1.16)
  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