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Table 1 Mode of delivery in twin births during 1987–2014 in Finland. The number of elective CSa is available from 1991, breech deliveries and urgent CS from 1996. The figures are expressed at three-year intervals from 1991 to 2012; also the first year 1987 and last year 2014 included

From: Maternal complications in twin pregnancies in Finland during 1987–2014: a retrospective study

Year

Elective CS %

All CS B % b

Urg CS A % c

Urg CS B %

Vacuum extraction A %

Vacuum Extraction B %

Forceps A %

Forceps B %

Breech A %

Breech B %

Vag. + CS combined % d

1987

 

41.6

  

3.7

3.3

0.3

0.3

  

2.3

1991

21.3

40.3

16.8

19.1

4.5

5.2

0.5

0.5

  

2.3

1994

23.7

47.3

21.2

23.6

4.2

4.1

0.2

0.2

  

2.4

1997

23.2

48.6

24.2

25.5

5.2

4.5

0.0

0.1

2.2

8.6

1.3

2000

21.1

45.3

24.2

24.1

3.8

3.7

0.1

0.0

2.9

8.5

0.0

2003

22.0

45.8

24.0

23.7

5.1

5.5

0.1

0.1

1.6

8.2

0.0

2006

19.1

49.5

27.9

30.3

8.3

8.2

0.0

0.0

1.2

9.7

2.4

2009

20.9

49.9

27.1

28.9

9.9

9.5

0.1

0.0

4.2

9.1

1.9

2012

17.8

48.2

27.1

30.5

9.6

8.9

0.0

0.1

1.9

9.9

3.4

2014

17.8

47.2

26.9

29.4

9.9

9.1

0.1

0.1

3.0

10.9

2.5

  1. aCesarean section
  2. b the percentage of all CS in twin deliveries
  3. c the percentage of urgent (urg) CS in twin deliveries (A and B separately)
  4. d the percentage of twin deliveries where twin A is born vaginally (vag) and twin B via urgent CS