Table 5.

Frequency of recurrent abnormal karyotypes in RPL abortions

Reference	Population	Frequency of recurrent abortions with abnormal karyotype
Warburton et al. [34]	USA, New York	19.2% (24/125)
Warburton et al. [34]	USA, Honolulu	27.7% (41/148)
Sullivan et al. [4]	USA, Utah	10% (3/30)
Skrzypczak et al. [38]	Poland	13% (3/23)
Sugiura-Ogasawara et al. [21]	Japan	33.6% (32/95)
Feichtinger et al. [32]	Austria, Vienna	56% (42/75)
This study	Russia	35.3% (18/51)