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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)