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Table 1 Clinical characteristics of the pregnant women with congenital heart disease

From: Outcomes of women with congenital heart disease admitted to acute-care hospitals for delivery in Japan: a retrospective cohort study using nationwide Japanese diagnosis procedure combination database

Total N = 249

n (%) or median (inter-quartile range)

Number of missing data

Age (years)

32 (28–35)

0 (0.0%)

Height (cm)

157 (153–160)

4 (1.6%)

Weight (kg)

58.2 (52.4–64.4)

2 (0.8%)

Past or current smokers

18 (7.2%)

18 (7.2%)

Ambulance

9 (3.6%)

0 (0.0%)

Emergent hospitalization

25 (10.0%)

0 (0.0%)

Referral from other hospitals

198 (79.5%)

0 (0.0%)

Weeks of gestation

 On admission (weeks)

37 (35–38)

9 (3.6%)

 At delivery (weeks)

37 (36–38)

9 (3.6%)

 < 22 weeks

5 (2.0%)

 

 22–37 weeks

70 (28.1%)

 

 37 ≤ weeks

165 (66.3%)

 

Delivery methods

 

0 (0.0%)

 Vaginal

68 (27.3%)

 

  Vacuum extraction delivery

40 of 68 (58.9%)

 

  Forceps delivery

0 of 68 (0.0%)

 

 Cesarean section (emergent)

72 (28.9%)

 

 Cesarean section (elective)

109 (43.8%)

 

Volume of intrapartum hemorrhage (mL)

606 (390–872)

12 (4.8%)

Utilization of intensive care unit

75 (30.1%)

0 (0.0%)

Length of stay (days)

9 (8–17)

0 (0.0%)

Distance between home and hospital (km)

9.8 (5.2–18.0)

78 (31.3%)

Types of hospitals

 

0 (0.0%)

 University hospitals

137 (55.0%)

 

 Other hospitals

112 (45.0%)

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