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Table 3 The distribution of births in different data sets

From: Births and induced abortions among women of Russian, Somali and Kurdish origin, and the general population in Finland –comparison of self-reported and register data

 

General population

Russian

Somali

Kurdish

18–29 years a

n = 182

n = 83

n = 70

n = 66

Survey data 1, women with at least one birth, %

8.5 (5.1–13.8)

17.0 (11.0–25.3)*

60.3 (48.1–71.3)***

41.2 (33.1–49.8)***

Register data 2, women with at least one birth, %

8.5 (5.1–13.8)

16.1 (10.3–24.4)*

54.5 (42.8–65.7)***

37.6 (30.0–46.0)***

Combined data 3, women with at least one birth, %

8.5 (5.1–13.8)

17.0 (11.0–25.3)*

60.3 (48.1–71.3)***

41.2 (33.1–49.8)***

30–64 years b

n = 448

n = 258

n = 104

n = 161

Survey data 1, women with at least one birth, %

69.2 (63.9–74.0)

89.0 (84.0–92.5)***

95.5 (89.9–98.1)***

95.7 (91.7–97.9)***

Register data 2, women with at least one birth, %

52.9 (47.6–58.1)

44.7 (38.4–51.1)*

67.5 (58.2–75.6)**

62.3 (55.3–68.8)*

Combined data 3, women with at least one birth, %

69.2 (63.9–74.1)

89.0 (84.0–92.5)***

95.5 (89.9–98.1)***

96.4 (92.6–98.3)***

18–64 years c, Combined data 3

n = 630

n = 341

n = 174

n = 227

Among all women

 no births, %

50.6 (46.9–54.2)

33.5 (29.0–38.3)***5

17.6 (13.1–23.3)***5

21.8 (17.8–26.5) ***5

 1–2 births, %

36.8 (33.2–40.5)

58.6 (53.5–63.5)

18.5 (13.3–25.0)

36.4 (30.8–42.4)

 ≥3 births, %

12.6 (10.3–15.4)

7.9 (5.6–11.2)

63.9 (57.4–70.0)

41.8 (36.7–47.0)

Mean number of births among all women

1.0 (1.0–1.1)

1.0 (0.9–1.1)

4.5 (4.0–5.0)***

2.6 (2.3–2.8)***

Mean number of births among parous women

1.8 (1.7–2.0)

1.6 (1.4–1.7)**

5.9 (5.3–6.4)***

3.4 (3.1–3.7)***

Among women with first birth before migration

 

n = 179

n = 57

n = 117

 1–2 births, %

NA

86.2 (80.2–90.6)

8.7 (3.7–19.3)

32.0 (24.5–40.5)

 ≥3 births, %

NA

13.8 (9.4–19.8)

91.3 (80.7–96.3)

68.0 (59.5–75.5)

 mean

NA

1.6 (1.4–1.7)

7.2 (6.4–8.1)

3.8 (3.5–4.2)

Among women with first birth after migration †

 

n = 72

n = 50

n = 65

 1–2 births, %

NA

92.7 (81.6–97.3)

30.8 (18.3–46.8)***

72.9 (60.1–82.7)***

 ≥3 births, %

NA

7.3 (2.7–18.4)

69.2 (53.2–81.7)***

27.1 (17.3–39.9)***

 mean

NA

1.7 (1.5–2.0)

4.2 (3.6–4.73)***

2.4 (2.1–2.7)***

Women with at least one birth, model-adjusted d %

61.0 (56.3–65.6)

76.4 (72.0–80.3)***

85.7 (80.8–89.5)***

83.9 (80.2–87.1)***

  1. 1Survey data:
  2. Migrant Health and Wellbeing Study and the Health 2011 Survey
  3. Age-adjusted and weighted proportions
  4. a18–29 years age adjusted
  5. b30–64 years age adjusted
  6. 2 Register data:
  7. Medical Birth Register and the Register of Induced Abortions
  8. Age-adjusted and weighted proportions
  9. 3 Combined survey and register data:
  10. Combined data from the surveys, Medical Birth Register and Register of Induced Abortions
  11. Age-adjusted and weighted proportions
  12. c18–64 years age adjusted
  13. † Statistical differences in relation to migrant origin women whose first birth was before migration
  14. NA = no observations
  15. dAdjusted for age, work status, marital status and education
  16. Statistically significant differences compared to the Finnish reference group (Satterthwaite adjusted F-statistic):* p-value < 0.05
  17. **p-value < 0.01
  18. ***p-value < 0.001
  19. 5Overall p-value for the difference of the multinomial distribution between general population and the migrant group