Table 1.

Characteristics of the study population by region of birth (n = 1,917,171).

		Total	Swedish-born	Global North	Global South
		N = 1,917,171	N = 1,520,156	N = 91,424	N = 305,591
			(79.3%)	(4.8%)	(15.9%)
Birthweight in grams	< 2500	52,971 (2.7%)	40,114 (2.6%)	2,603 (2.8%)	10,254 (3.4%)
	2500–3999	1,486,385 (77.5%)	1,159,533 (76.3%)	72,230 (79%)	254,622 (83.3%)
	≥ 4000	377,815 (19.7%)	320,509 (21%)	16,591 (18.1%)	40,715 (13.3%)
Gestational weeks	< 37	68,054 (3.5%)	54,093 (3.6%)	3,149 (3.4%)	10,812 (3.5%)
	37–41	1,594,818 (83.2%)	1,260,720 (83%)	76,428 (83.54%)	257,670 (84.3%)
	≥ 42	245,299 (13.3%)	205,343 (13.5%)	11,847 (13%)	37,109 (12.1%)
Disposable Income	Low	639,013 (33.3%)	398,136 (26.2%)	37,280 (40.8%)	203,597 (66.6%)
	Medium	638,377 (33.3%)	550,560 (36.2%)	25,728 (28.1%)	62,089 (20.3%)
	High	639,781 (33.4%)	571,460 (37.6%)	28,416 (31%)	39,905 (13%)
Partner support	Cohabitating	1,293,811 (67.5%)	993,954 (65.4%)	65,486 (71.6%)	234,371(76.6%)
	Living alone	623,360 (32.5%)	526,202 (34.6%)	25,938 (28.3%)	71,220 (23.3%)
Mother’s age at delivery	< 24	271,862 (14.2%)	203,134 (13.4%)	8,830 (9.6%)	59,898 (19.6%)
	25–34	1,258,567 (65.6%)	1,016,822 (66.9%)	57,585 (63%)	184,160 (60.2%)
	≥ 35	386,742 (20.2%)	300,200 (19.7%)	25,009 (27.3%)	61,533 (20.1%)
Year of birth	1997–2001	408,382 (21.3%)	340,714 (22.4%)	18,507 (20.2%)	49,161 (16%)
	2002–2006	463,491 (24.1%)	381,05 (25%)	20,088 (22%)	62,353 (20.4%)
	2007–2011	512,248 (26.7%)	401,158 (26.4%)	24,961 (27.3%)	86,129 (28.1%)
	2012–2016	533,050 (27.8%)	397,234 (26.1%)	27,868 (30.5%)	107,948 (35.3%)
Parity	Primiparous #1	272,562 (14.2%)	210,035 (13.8%)	17,687 (19.3%)	44,840 (14.6%)
	Multiparous #2 +	1,644,609 (85.8%)	1,310,121 (86.1%)	73,737 (80.6%)	260,751 (85.3%)