Exposure to tobacco smoke prenatally and postnatally is associated with hearing impairment in children, according to researchers in Japan (Paediatr Perinat Epidemiol. 2018 Jun 5. doi: 10.1111/ppe.12477. [Epub ahead of print]). They conducted a retrospective study of 50,734 children born between 2004 and 2010 in Kobe City, and measured smoking during pregnancy and exposure to tobacco smoke at 4 months with parent-reported questionnaires.
The prevalence of hearing impairment at 3 years old was 4.6 percent. Compared with children not exposed to tobacco smoke prenatally and at 4 months, children exposed to only maternal smoking during pregnancy had a 26 percent increased relative risk, those exposed to only second-hand smoke at 4 months had a 30 percent increased relative risk, those exposed to smoking only during pregnancy had a 68 percent increased relative risk, and those exposed to both smoking during pregnancy and second-hand smoke at 4 months had a 2.4-time increased relative risk.
Senior author of the study, Koji Kawakami, MD, PhD, a professor at Kyoto University, said this study clearly shows that preventing exposure to tobacco smoke during pregnancy and postnatally may reduce the risk of hearing problems in children. “The findings remind us of the need to continue strengthening interventions to prevent smoking before and during pregnancy and exposure to second-hand smoke in children,” he said in a press release.
Senior author of the study, Koji Kawakami, MD, PhD, a professor at Kyoto University, said this study clearly shows that preventing exposure to tobacco smoke during pregnancy and postnatally may reduce the risk of hearing problems in children. “The findings remind us of the need to continue strengthening interventions to prevent smoking before and during pregnancy and exposure to second-hand smoke in children,” he said in a press release.
Published: 6/8/2018 11:05:00 AM
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