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

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

	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# aOR^a (95 % CI)	2 parents employed# aOR^a (95 % CI)	<primary# aOR^b (95 % CI)	Superior# aOR^b (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)

The reference group are women with Belgian nationality at delivery and of origin (OR = 1) * ≤ 0.05 ** ≤ 0.01*** ≤ 0.001
^aAdjusted for maternal age, parity and maternal education
^bAdjusted for maternal age, parity and parental employment status
The other categories have been omitted for clarity
# Interaction tests are significant for all nationalities (p < 0.05)

ISSN: 1471-2393