US children get recommended amounts of sleep

US children get recommended amounts of sleep

While parents may sometimes despair of their children getting enough shut-eye, especially with age-old stalling tactics of another story or another glass of water, children in the United States do appear to be getting the recommended amount of sleep.

According to a US study published in the Archives of Pediatric and Adolescent Medicine, there has been concern that US children are getting too little sleep, with insufficient sleep tied to issues ranging from behavior problems to heart health risks.

But there hasn't been much hard evidence on how much sleep children typically get, so a group led by Jessica Williams, a graduate student at the University of California Los Angeles, set out to get estimates of sleep times from birth to age 18.

"These estimates are consistent with the amount of sleep recommended for children, and no evidence was found of racial/ethnic differences," the group wrote in its report.

The researchers gathered data from a nationwide survey that has tracked families for decades, focusing on parents' reports of their children's sleep, beginning in 1997.At that time, 2,832 children were included.

In 2002 and 2007 the families were surveyed again and 2,520 and 1,424 children were included, respectively.Williams's team found that until their second birthday, babies in the study slept an average of 12 to 14 hours during each 24-hour period.By age four it had dropped to about 11 hours of sleep and by age 10, to 10 hours. By age 16, kids were getting an average of about nine hours of sleep per night.The U.S. Centers for Disease Control and Prevention recommends that toddlers get 12 to 14 hours of sleep, preschoolers 11 to 13 hours, and adolescents aged 10 to 17 from 8.5 to 9.5 hours.

One of the big strengths of this study is that it tracked changes in sleep among the same children as they aged, said Maurice Ohayon, director of the Stanford Sleep Epidemiology Research Center in Palo Alto, California.

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