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Table 3 Pregnancy and delivery outcomes after propensity score matching

From: Clinical significance of true umbilical cord knot: a propensity score matching study

Variables

N

Without TUCK (n = 7320)

With TUCK (n = 732)

P-value

OR (95%-CI)

All patients

(after matching)

Normal vaginal delivery

8052

5228 (71.42)

507 (69.26)

0.31

-

5735 (71.22)

Vacuum-assisted delivery

548 (7.48)

65 (8.88)

613 (7.61)

Cesarean delivery

1544 (21.09)

160 (21.85)

1704 (21.16)

Spontaneous onset of labor

6762

3942 (64.18)

385 (62.09)

0.45

-

4327 (63.99)

Elective cesarean delivery

701 (11.41)

66 (10.64)

767 (11.34)

Induction of labor with PGE2

527 (8.58)

65 (10.48)

592 (8.75)

Induction of labor with EAB

160 (2.65)

15 (2.419)

175 (2.58)

Induction of labor with oxytocin

809 (13.17)

88 (14.19)

897 (13.26)

Emergency cesarean delivery

7351a

843 (12.28)

94 (13.38)

0.38

1.1 (0.88–1.38)

937 (11.63)

Emergency cesarean delivery due to NRFHR

937

168 (2.54)

29 (4.35)

0.008

1.71 (1.14–2.56)

197 (2.7)

Vacuum-assisted delivery due to NRFHR

613

52 (9.48)

6 (9.23)

0.94

0.97 (0.39–2.35)

58 (9.46)

Meconium-stained amniotic fluid

5689

797 (15.41)

100 (19.26)

0.02

1.31 (1.04–1.65)

897 (15.76)

Blood transfusions

8052

35 (0.47)

1 (0.13)

0.25

0.28 (0.04–2.08)

36 (0.44)

Intrapartum fever

8052

60 (0.82)

4 (0.54)

0.42

0.66 (0.24–1.83)

64 (0.79)

Placental abruption

8052

56 (0.76)

5 (0.68)

0.8

0.89 (0.35–2.23)

61 (0.75)

  1. aAfter exclusion of patient who underwent elective CS
  2. Categorical variables are presented as number (%) and continuous variables as mean ± standard deviation or median (interquartile range)
  3. TUCK true umbilical cord knot, PGE2 prostaglandin E2, EAB extra-amniotic balloon, NRFHR non-reassuring fetal heart rate