Due to more adequate preparation for pregnancy by both husband and wife, not many people have the critical risk of Down’s syndrome screening.
As the standard of living gradually rises, during the period of preparation for pregnancy, both spouses are more adequately prepared, there are no bad habits, and they strengthen their diet, life, exercise, emotions and other aspects of regulation, and they undergo regular physical health checks, so that both spouses are in good health, and the number of people who have a critical risk of Down’s syndrome screening may be significantly lower in such cases.
However, the current general delay in the age of marriage and childbearing may lead to a higher incidence of Down’s syndrome. If there are abnormalities in the screening results, further non-invasive DNA tests or amniocentesis should be performed for a definitive diagnosis, and timely termination of pregnancy if necessary.