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Table 5 Inter-observer agreement among and between experienced embryologists and embryology trainees after embryology training sessions indicated by the median (range) value of the kappa coefficient

From: Intra- and inter-observer analysis in the morphological assessment of early-stage embryos

  Experts vs trainees Experts vs Experts Trainees vs Trainees
Parameters day 1    
Position of the pronuclei 0.46 (0.24-0.56) 0.50 (0.45-0.56) 0.51 (0.40-0.59)
Size of the pronuclei 0.46 (0.19-0.77) 0.36 (0.29-0.60) 0.38 (0.24-0.68)
Cytoplasmic halo 0.53 (0.40-0.78) 0.61 (0.44-0.63) 0.69 (0.63-0.73)
Parameters day 2    
Number of blastomeres 0.85 (0.66-0.91) 0.77 (0.77-0.88) 0.79 (0.79-0.85)
Degree of fragmentation 0.45 (0.35-0.62) 0.68 (0.60-0.76) 0.55 (0.42-0.63)
Size of blastomeres 0.38 (0.10-0.54) 0.59 (0.59-0.64) 0.34 (0.27-0.51)
Pattern of fragmentation 0.41 (0.22-0.47) 0.48 (0.42-0.54) 0.43 (0.42-0.51)
Size of fragments 0.39 (0.21-0.59) 0.53 (0.35-0.54) 0.51 (0.43-0.52)
Multinucleation 0.39 (0.16-0.60) 0.53 (0.52-0.57) 0.25 (0.14-0.66)
Orientation of the cleavage axes 0.74 (0.58-0.89) 0.72 (0.71-0.86) 0.82 (0.64-0.82)
Parameters day 3    
Number of blastomeres 0.54 (0.48-0.65) 0.73 (0.73-0.84) 0.50 (0.48-0.56)
Degree of fragmentation 0.21 (0.10-0.47) 0.66 (0.53-0.78) 0.37 (0.29-0.65)
Size of blastomeres 0.45 (0.20-0.56) 0.52 (0.46-0.64) 0.32 (0.24-0.50)
Pattern of fragmentation 0.30 (0.15-0.47) 0.63 (0.53-0.66) 0.37 (0.35-0.49)
Size of fragments 0.42 (0.23-0.61) 0.54 (0.42-0.75) 0.53 (0.35-0.55)