Table 3 Within the VD group, comparison of variables of the subgroups cephalic (n = 153) and non-cephalic (n = 54) presentation

Age of the mother (years)

31.2 ± 5.2

32.0 ± 3.9

ns (0.22)

 1

67 (43,8%)

10 (18,5%)

0.002

 2+

76 (56,2%)

44(81,5%)

Gestational age (weeks)

36.1 ± 1.4

36.7 ± 1.2

0.007

32–35

56 (36,6%)

9 (16,7%)

36–40

97 (63,4%)

45 (83,3%)

Gender m/f (%)

65/88 (42.5/53.5)

35/19 (64.8/35.2)

p = 0.005

Chorionicity (%) mono/di/na

26/103/24 (17.0/67.3/15.7)

18/34/2 (33.3/62.0/3.7)

p = 0.04

Lung maturition n

9

7

ns (p = 0.09)

Induction of labor n

70 (45,7%)

29 (53,7%)

ns (p = 0.32)

Twin-twin interval (min)

13.2 ± 10.8

17.02 ± 12.7

0.04

Birth weight (g)

2494 ± 392

2577 ± 409

0.19

Head cirumference (cm)

32.9 ± 1.4

33.1 ± 1.1

0.48

 6–8

18

8

ns (p = 0.2)

  < 6

1

1

UA pH

7.27 ± 0.08

7.24 ± 0.08

0.03

< 7.10 (n)

7

1

7.10–7.20 (n)

18

16

Transfer to NICU (n) due to distress

30

8

ns (p = 0.5)

4

2