No
Nt
Ni
Method of CTG interpretation
Proportion of agreement (95% CI) Intra-observer reliability (95% CI)
Blackwell et al. (2011)26
3
120
360
NICHD
Not reported
0.45 (not reported)
Ghi et al (2016)28
2
246
492
RCOG
0.72 (Not reported)
0.58 (0.50-0.66)
PIQUARD
0.60 (Not reported)
0.50 (0.44 – 0.56)
Rei et. al (2016)27 6 151 906 FIGO 0.60(0.56 – 0.64) 0.39 (0.33 – 0.45)
Santo et al (2017)29 27 151 4077 FIGO 0.64 (0.61 – 0.67) 0.37 (0.31 – 0.43)
ACOG 0.73 (0.70 – 0.76) 0.15 (0.10 – 0.21)
NICE 0.55 (0.51 – 0.58) 0.33 (0.28 – 0.39)
Fetal-Physiology-trainning
32
5
160
Local guidelines (NICE / STAN)
0.61 (0.53 – 0.68)
0.33 (0.32 – 0.36)
Type of hypoxia 0.76 (0.69 – 0.82) 0.37 (0.35 – 0.39)