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Table 2 Median (range) of kappa coefficient as measurement of intra-observer agreement in embryo evaluation

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

Parameters Median kappa coefficient (range)
Parameters day 1  
Position of the pronuclei 0.60 (0.48-0.64)
Size of the pronuclei 0.54 (0.29-1)
Cytoplasmic halo 0.57 (0.33-0.77)
Parameters day 2  
Number of blastomeres 0.88 (0.82-0.94)
Degree of fragmentation 0.64 (0.59-0.68)
Size of blastomeres 0.71 (0.69-0.74)
Pattern of fragmentation 0.68 (0.46-0.86)
Size of fragments 0.60 (0.36-0.65)
Multinucleation 0.51 (0.32-0.79)
Orientation of the cleavage axes 0.85 (0.71-0.93)
Parameters day 3  
Number of blastomeres 0.87 (0.73-0.97)
Degree of fragmentation 0.67 (0.63-0.84)
Size of blastomeres 0.63 (0.45-0.70)
Pattern of fragmentation 0.61 (0.53-0.70)
Size of fragments 0.57 (0.46-0.70)