And:

The number of infant deaths per 1,000 live births rose in those states from an average of 5.93 to 6.26. In real terms, this amounted to several hundred more infant deaths country-wide after abortion bans came in. The study found there were an "estimated 478 excess infant deaths in the 14 states with bans during the months affected by bans".

There was an increase in the number of newborn babies dying as a result of "congenital causes", suggesting that these may previously have been pregnancies that would have been terminated to prevent a baby from being born suffering from an unsurvivable genetic condition.

This was described in the study as a result of the "continuation of pregnancies with nonviable fetuses that might not have continued in the absence of abortion bans".

There was also a particular increase in infant deaths for black babies, a group that already had higher than average infant mortality rates due to "long-standing racial and ethnic disparities in infant health", the researchers noted.