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Table 1 Main maternal and perinatal characteristics of the study population, with the subdivisions into normal versus acidemic groups, and normal versus operative vaginal deliveries

From: Electrocardiography versus photoplethysmography in assessment of maternal heart rate variability during labor

 

Fetuses born with UAB pH ≥7.15 (n = 45)

Fetuses born with UAB pH <7.15 (n = 6)

p-value

Normal deliveries (n = 28)

Vaginal operative deliveries (n = 19)

p-value

Maternal data, median (IQR)

 Age (years)

28 (3.5)

27 (10)

0.597

28 (8.0)

28 (9.0)

0.550

 Parity

0 (1)

0 (1)

0.853

0 (1)

0 (0)

0.001

 Gestational age (weeks)

39.9 (1.3)

39.8 (2.5)

0.578

39.7 (1.1)

39.9 (1.1)

0.415

Delivery, n (%)

  

0.693

  

 Vaginal, normal

25 (56 %)

3 (50 %)

 

 

 Vaginal, operative

17 (37 %)

2 (33 %)

 

 

 Cesarean section

3 (7 %)

1 (17 %)

 

 

Epidural analgesia, n (%)

45 (100 %)

6 (100 %)

28 (100 %)

19 (100 %)

Newborn data, median (IQR)

      

 Birthweight (g)

3190 (393)

3078 (381)

0.255

3160 (350)

3200 (405)

0.871

 1 min Apgar score

9 (1)

9 (0)

0.679

9 (1)

9 (1)

0.957

 5 min Apgar score

10 (0)

10 (0)

0.679

10 (0)

10 (0)

0.687

 UAB pH

7.27 (0.09)

7.10 (0.06)

0.000

7.27 (0.10)

7.22 (0.09)

0.109

Gender, n (%)

  

0.191

  

0.246

 Males

24 (53 %)

1 (17 %)

 

11 (39 %)

11 (58 %)

 

 Females

21 (47 %)

5 (83 %)

 

17 (61 %)

8 (42 %)

 
  1. Values within brackets in the header correspond to the number of cases
  2. p-value <0.05 is in italic