Measuring the invisible: perinatal health outcomes of unregistered women giving birth in Belgium, a population-based study

Table 3 Perinatal mortality (crude rates among No maternal NPR) and Odds Ratios according to NPR registration status (reference is maternal NPR), stratified by maternal nationality

Maternal Nationality	Per 1000 births	OR^a	CI (95%)	*p-value*	aOR^b	CI (95%)	*p-value*
Belgium		cases = 3476 / n = 666,646			cases = 2827 / n = 624,389
	21.6	4.3	3.3–5.4	*< 0.0001*	3.6	2.7–4.8	*< 0.0001*
EU15		cases = 432 / n = 59,134			cases = 251 / n = 49,919
	36.1	7.3	6.0–8.95	*< 0.0001*	3.4	2.5–4.6	*< 0.0001*
EU27 (without EU15)		cases = 167 / n = 30,048			cases = 113 / n = 26,426
	8.6	1.6	1.02–2.6	*0.04*	1.1	0.6–2.15	0.74
Eastern Europe		cases = 84 / n = 15,184			cases = 59 / n = 12,478
	8.4	1.6	0.95–3.0	0.13	1.3	0.5–3.1	0.60
Turkey		cases = 64 / n = 8440			cases = 50 / n = 7470
	13.1	1.8	0.55–5.7	0.33	0.79	0.10–6.3	0.82
Maghreb		cases = 272 / n = 34,886			cases = 195 / n = 30,641
	12.9	1.7	1.04–2.8	*0.03*	1.6	0.8–3.1	0.18
Sub-Saharan Africa		cases = 251 / n = 26,377			cases = 151 / n = 22,295
	16.7	1.8	1.2–2.8	*0.005*	1.7	0.96–3.1	0.07
South America		cases = 35 / n = 5016			cases = 26 / n = 4286
	7.4	1.1	0.4–2.6	0.89	0.91	0.3–2.9	0.87
Middle East and North/West Asia		cases = 87 / n = 11,130			cases = 53 / n = 8966
Middle East and North/West Asia	10.3	1.3	0.6–3.1	0.49	1.4	0.4–4.6	0.60
Other		cases = 61 / n = 11,203			cases = 46 / n = 9654
	8.0	1.5	0.6–3.8	0.37	1.6	0.5–4.6	0.42
Outside EU		cases = 802 / n = 103,028			cases = 541 / n = 87,311
	11.7	1.6	1.22–1.99	< 0.0001	1.5	1.07–2.08	0.02

^a Crude OR
^b Adjusted OR for maternal age, single, number of incomes and maternal education

ISSN: 1471-2393