Country of first birth and neonatal outcomes in migrant and Norwegian-born parous women in Norway: a population-based study

Vik, Eline S.; Nilsen, Roy M.; Aasheim, Vigdis; Small, Rhonda; Moster, Dag; Schytt, Erica

doi:10.1186/s12913-020-05415-y

Table 1 Background characteristics at the time point for 2nd birth; migrant (n = 68,392) and Norwegian-born women (n = 369,528)^a

From: Country of first birth and neonatal outcomes in migrant and Norwegian-born parous women in Norway: a population-based study

	Migrant women’s first birth				Norwegian-born women’s first birth
	Before immigration		After immigration		Outside Norway		In Norway
	n	%	n	%	n	%	n	%
Total	21,793	31.9	46,599	68.1	4602	1.2	364,926	98.8
Age (years)
< 25	3027	13.9	6631	14.2	1419	30.8	46,724	12.8
25–34	14,535	66.7	31,949	68.6	2991	65.0	267,908	73.4
≥ 35	4231	19.4	8019	17.2	192	4.2	50,294	13.8
Single status^b	1365	6.3	3073	6.6	442	9.6	16,899	4.6
Mother’s education
No education	367	2.7	653	1.8	0	0.0	3	0.0
Primary education	3889	28.3	10,275	28.3	1112	24.2	58,473	16.0
Secondary school	3518	25.6	9244	25.4	1451	31.6	135,373	37.1
University/college	5985	43.5	16,188	44.5	2023	44.1	170,715	46.8
Mother’s education, missing	8034	36.9	10,239	22.0	16	0.4	362	0.1
Mother’s income
≤ 25 percentile	5194	41.9	9386	26.8	692	15.9	61,779	18.0
25–50 percentile	1971	15.9	5981	17.1	674	15.5	83,609	24.3
50–75 percentile	2784	22.4	8838	25.2	1143	26.3	98,455	28.6
≥ 75 percentile	2455	19.8	10,839	30.9	1839	42.3	100,274	29.1
Mother’s income, missing	9389	43.1	11,555	24.8	254	5.5	20,809	5.7
Smoking in early pregnancy^c	1203	7.8	1611	4.7	709	17.7	32,810	14.0
Previous stillbirth	214	1.2	235	0.6	77	1.8	1075	0.4
Migration
Maternal origin (GBD)
High income country	3864	17.7	10,266	22.0	4602	100.0	364,926	100.0
Central Europe, Eastern Europe & Central Asia	7488	34.4	11,076	23.8
Sub-Saharan Africa	2714	12.5	5491	11.8
North Africa & Middle East	2482	11.4	7797	16.7
South Asia	873	4.0	3208	6.9
Southeast Asia, East Asia & Oceania	3625	16.6	7516	16.1
Latin America & Caribbean	747	3.4	1245	2.7
Reason for immigration
Nordic migrants	1720	8.0	5514	12.0
Work/education	3170	14.8	7960	17.3
Family reunion/establishment	12,789	59.5	25,338	55.1
Refugee	3817	17.8	7137	15.5
Reason for immigration, missing	297	1.4	650	1.4
Length of Residence
< 2 years	10,659	48.9	1801	3.9
2–5 years	8618	39.5	22,952	49.3
6–9 years	1751	8.0	13,116	28.2
≥ 10 years	765	3.5	8730	18.7
Age at migration < 18 years	367	1.7	5231	11.2
Foreign-born father	13,359	81.7	29,094	64.7	594	13.3	21,058	5.8
Paternal origin, missing	5431	24.9	1636	3.5	148	3.2	3282	0.9

^aPercentages are calculated from non-missing data if not otherwise noted
^bIncludes unmarried, single, divorced, separated, widowed and other/missing.
^cData on smoking from 1999 onwards

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ISSN: 1472-6963

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