Supplementary Table 1. Characteristics of the sample.

Native Finns (n=185,184)
n (%) / Immigrants (n=184,806)
n (%)
Men / 94,488 / 94,188
Age
15-29 years / 26,894 (30.4) / 26,819 (30.4)
30-44 years / 35,561 (40.2) / 35,430 (40.2)
45-59 years / 19,277 (21.8) / 19,224 (21.8)
60-74 years / 5,737 (6.5) / 5,727 (6.5)
75+ years / 987 (1.1) / 987 (1.1)
Marital status
Married or in registered partnership / 38,290 (40.5) / 46,871 (60.0)
Unmarried / 46,699 (49.4) / 19,534 (25.0)
Other (widowed, separated, divorced) / 9,499 (10.1) / 11,774 (15.1)
Socioeconomic status
Entrepreneurs and farmers / 6,400 (7.0) / 6,673 (8.1)
Upper white-collar workers / 18,680 (20.4) / 10,316 (12.5)
Lower white-collar workers / 18,103 (19.8) / 8,769 (10.7)
Blue collar workers / 23,674 (25.9) / 27,923 (33.9)
Not in employment / 24,619 (26.9) / 28,674 (34.8)
Region of origin
Finland / 94,488 (100.0)
Other Nordic countries / 4,540 (4.8)
Russia and former Soviet Union / 17,643 (18.8)
Other Western countries / 28,156 (29.9)
Eastern Europe (non-EU) / 4,640 (4.9)
North Africa and Middle East / 15,276 (16.2)
Sub-Saharan Africa / 9,557 (10.2)
Asia / 12,408 (13.2)
Others / 1893 (2.0)
Women / 90,696 / 90,618
Age
15-29 years / 24,414 (28.7) / 24,394 (28.7)
30-44 years / 32,883 (38.7) / 32,866 (38.7)
45-59 years / 20,823 (24.5) / 20,797 (24.5)
60-74 years / 5,371 (6.3) / 5,368 (6.3)
75+ years / 1,526 (1.8) / 1,524 (1.8)
Marital status
Married or in registered partnership / 39,290 (43.3) / 48,186 (59.0)
Unmarried / 37,642 (41.5) / 15,123 (18.5)
Other (widowed, separated, divorced) / 13,763 (15.2) / 18,391 (22.5)
Socioeconomic status
Entrepreneurs and farmers / 3,812 (4.3) / 4,744 (5.9)
Upper white-collar workers / 16,771 (19.0) / 8,539 (10.7)
Lower white-collar workers / 35,426 (40.2) / 16,255 (20.3)
Blue collar workers / 11,446 (13.0) / 18,911 (23.6)
Not in employment / 20,651 (23.4) / 31,626 (39.5)
Region of origin
Finland / 90,696 (100.0)
Other Nordic countries / 3,853 (4.3)
Russia and former Soviet Union / 29,693 (32.8)
Other Western countries / 21,548 (23.8)
Eastern Europe (non-EU) / 3,983 (4.4)
North Africa and Middle East / 7,608 (8.4)
Sub-Saharan Africa / 6,417 (7.1)
Asia / 15,668 (17.3)
Others / 1820 (2.0)