Changes in the number of babies born with Down syndrome in Japan.
Yoshinobu SugoKentaro KurasawaYusuke SaigusaHaruka HamanoueFumiki HiraharaEtsuko MiyagiPublished in: The journal of obstetrics and gynaecology research (2022)
This study revealed that the proportion of mothers giving birth at the age of 35 years or older strongly affected the proportion of babies born with Down syndrome. We assume that the proportion of babies is slightly affected by the increased number of pregnant women currently undergoing prenatal screening after the introduction of noninvasive prenatal genetic testing in 2013.