Carried out by researchers at Seattle Children's Research Institute and Microsoft data scientists, the new study looked at data on 20,685,463 U.S. births between 2007 and 2011, including 19,127 cases of SUID. For more than 12.4 million of those births and almost 11,000 SUID cases, the researchers had prenatal smoking information.
The first findings to result from a collaboration between Seattle Children's Research Institute and Microsoft data scientists provides expecting mothers new information about how smoking before and during pregnancy contributes to the risk of an infant dying suddenly and unexpectedly before their first birthday.
Smoking during pregnancy - even just one cigarette a day - doubles the risk of sudden unexpected infant death (SUID), according to a new study.
"The most important takeaway is for women to understand that quitting smoking before and during pregnancy by far results in the greatest reduction in SUID risk", she said.More news: Donald Trump criticizes Theresa May for 'how badly' Brexit talks have gone
Sudden unexpected infant death defined as (SUID).
To see how smoking while pregnant affected the likelihood of SUID, the researchers examined data from almost 20 million births between 2007 and 2011 while also taking into consideration mothers' smoking habits.
Their analysis also showed that mothers who smoked three months before pregnancy and quit in the first trimester still incurred a higher risk of SUID compared to non-smokers.
They also found that there was a 23 percent decrease in the risk of SUID for women who completely quit smoking and a 12 percent decrease in risk for women who reduced the number of cigarettes they smoked by the third trimester.More news: Khloe Kardashian "Upset" At Tristan Thompson's Lack Of Effort In Raising True
The study wasn't a controlled experiment created to prove whether or how smoking causes SUID.
Anderson added that if no women smoked during pregnancy, the researchers the current SUID rates could be lowered by 22 per cent. Furthermore, while the effects of smoking during pregnancy were derived from the entire cohort, the effects of smoking before pregnancy were determined using only data from 2011 (3.1 million total births and 2585 SUIDs).
The researchers did find ways for women to reduce their risk of SUID. Moving forward, the team hopes these results inspire lawmakers to get women the support and encouragement they need to quit smoking before becoming pregnant.
To prevent SUID, doctors advise parents to put babies to sleep on their backs without blankets or other soft bedding and toys that could pose a suffocation risk.More news: OECD concerned with allegations Trudeau interfered in SNC-Lavalin case