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Table 2 Description of women’s medical and obstetric characteristics

From: Does induction of labor for constitutionally large-for-gestational-age fetuses identified in utero reduce maternal morbidity?

Women with a suspected large for gestational age fetus

Overall cohort (n = 3077)% [m ± ET]

Induction of labor at 37–38 weeks+ 6 d(n = 199)

Expectant management (n = 2878)% [m ± ET]

P value

Primiparous

(n = 2982) 39.7

(n = 193) 34.2

(n = 2789) 40.1

.10

Uterine scar

(n = 2725) 12.6

(n = 170) 2.9

(n = 2555) 13.2

<.0001

History of stillbirth or neonatal death

(n = 1636) 2.9

(n = 120) 3.3

(n = 1516) 2.8

.77

Smoked during pregnancy

(n = 2905)

(n = 190) 12.1

(n = 2715) 13.6

.57

Any pregnancy-related disorder

(n = 3077) 45.9

(n = 199) 62.8

(n = 2878) 44.7

<.0001

  Polyhydramnios

9.0

16.6

8.5

.0002

  Hypertension

6.3

14.0

5.7

<.0001

Labor onset

(n = 3046)

(n = 199)

(n = 2847)

 

  Labor inductiona

24.1

0

25.8c

-

  Spontaneous labor

57.6

0

61.6

 

  Elective cesarean

11.8

0

12.6

 

Mean gestational age b

(n = 3077) [39.6 ± 1.2]

(n = 199) [37.7 ± 0.5]

(n = 2878) [39.8 ± 1.2]

<.0001

Years of delivery

(n = 3077)

(n = 199)

(n = 2878)

 

  1994-1997

9.4

7.5

9.6

.28

  1998-2001

17.4

21.6

17.1

 

  2002-2005

34.3

35.7

34.2

 

  2006-2008

38.9

35.2

39.1

 
  1. aLabor induction ≥ 39 weeks.
  2. bGestational age at delivery.
  3. cDistribution of the labor induction term in the expectant management group: 31.0% at 39 weeks; 23.9% at 40 weeks; 40.4% at 41 weeks, and 4.8% at 42 weeks.