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Table 1 Reference data statistics

From: A novel technique for fetal heart rate estimation from Doppler ultrasound signal

Recording

Duration [min:s]

Signal loss [%]

Number of heart beats

Mean FHR [bpm]

STI Mean ± SD

1

45:26

3.7

6015

132.2

9.17 ± 2.40

2

13:22

0.8

1188

127.7

7.37 ± 0.75

3

9:20

2.1

1742

130.4

6.54 ± 0.65

  1. Descriptive statistics of the reference FHR signals derived from direct fetal electrocardiographic recordings