Skip to main content

Table 1 Intra-observer agreement indicated by the median (range) value of the kappa coefficient

From: Intra- and interobserver analysis in the morphological assessment of early stage embryos during an IVF procedure: a multicentre study

Characteristics Median kappa coefficient (range)
Characteristics day 1  
Position of the pronuclei 0.74 (0.65-0.77)
Size of the pronuclei 0.44 (0.33-0.57)
Cytoplasmic halo -0.34 (-0.62-0)
Characteristics day 2  
Number of blastomeres 0.82 (0.80-0.93)
Degree of fragmentation 0.58 (0.53-0.62)
Size of blastomeres 0.59 (0.48-0.62)
Characteristics day 3  
Number of blastomeres 0.67 (0.57-0.82)
Degree of fragmentation 0.59 (0.51-0.65)
Size of blastomeres 0.55 (0.47-0.76)
Decision 0.75 (0.72-0.88)