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Table 4 CTG signal statistics for the CTG-UHB cardiotocography database

From: Open access intrapartum CTG database

506 – Vaginal (44 – operative); 46 – Caesarean Section

US = 412; DECG = 102; US-DECG = 35; N/A = 3

 

Mean

Min

Max

Comment

Length of I. stage (min)

225

45

648

 

Length of II. stage (min)

11.87

0

30

 

Dist. SignalEnd to Birth (min)

2.70

0

29

Over 10 min: 9

Noisy data W1 (%)

12.38

0

74

 

Missing data W1 (%)

3.59

0

87

 

Overall W1 (%)

15.98

0

89

Over 50%: 18

Noisy data W2 (%)

13.42

0

49

 

Missing data W2 (%)

0

0

0

 

Overall W2 (%)

13.14

0

49

Over 25%: 98

Noisy data II. stage (%)

22.62

0

91

 

Missing data II. stage (%)

8.47

0

100

 

Overall II. stage (%)

31.26

0

100

Over 50%: 97

  1. W1 – 30 minute-long window beginning 60 minutes before end of the first stage of labor, W2 – 30 minute-long window beginning 30 minutes before end of the first stage of labor.