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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.