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Table 4 Odds Ratios of LBW according to maternal nationality, stratified by parental employment status and maternal education

From: Are all immigrant mothers really at risk of low birth weight and perinatal mortality? The crucial role of socio-economic status

  cases = 12,911; n = 159,978 cases = 33,373; n = 769,912 cases = 3,125; n = 50,265 cases = 17,239; n = 461,142
  0 parents employed#  aORa (95 % CI) 2 parents employed# aORa (95 % CI) <primary# aORb (95 % CI) Superior# aORb (95 % CI)
EU27 0.75*** (0.70-0.80) 0.91*** (0.87-0.96) 0.57*** (0.50-0.65) 0.89*** (0.83-0.95)
EU 27 naturalized Belgian 0.82*** (0.73-0.92) 1.03 (0.96-1.10) 0.58*** (0.42-0.79) 1.05 (0.95-1.15)
Turkey 0.50*** (0.44-0.56) 1.02 (0.83-1.26) 0.38*** (0.32-0.44) 1.44** (1.09-1.90)
Turkey naturalized Belgian 0.49*** (0.43-0.56) 0.99 (0.86-1.13) 0.44*** (0.37-0.53) 1.26* (0.99-1.60)
Maghreb 0.34*** (0.31-0.37) 0.73*** (0.63-0.86) 0.27*** (0.24-0.31) 0.75** (0.62-0.90)
Maghreb naturalized Belgian 0.37*** (0.34-0.41) 0.84*** (0.76-0.93) 0.29*** (0.25-0.34) 1.00 (0.88-1.14)
Sub-Saharan Africa 0.59*** (0.55-0.64) 1.52*** (1.27-1.82) 0.50*** (0.44-0.58) 1.26** (1.08-1.47)
Sub-Saharan Africa naturalized Belgian 0.55*** (0.47-0.63) 1.25*** (1.06-1.46) 0.57*** (0.45-0.73) 1.27** (1.07-1.52)
Eastern Europe 0.46*** (0.41-0.51) 0.84 (0.63-1.11) 0.41*** (0.34-0.48) 0.81 (0.63-1.03)
Eastern Europe naturalized Belgian 0.47*** (0.36-0.61) 0.77 (0.59-1.01) 0.48*** (0.34-0.68) 0.79 (0.58-1.08)
  1. The reference group are women with Belgian nationality at delivery and of origin (OR = 1) * ≤ 0.05 ** ≤ 0.01*** ≤ 0.001
  2. aAdjusted for maternal age, parity and maternal education
  3. bAdjusted for maternal age, parity and parental employment status
  4. The other categories have been omitted for clarity
  5. # Interaction tests are significant for all nationalities (p < 0.05)