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U-M study urges parents to enforce booster seat use when carpooling

Many parents are more relaxed about booster seat use when carpooling, stronger laws need to encourage safety seat use

ANN ARBOR, Mich. - Most parents report that they typically require their child to use a life-saving booster seat, but more than 30 percent said they do not enforce this rule when their child is riding with another driver.

The study, conducted by child health experts at University of Michigan’s C.S. Mott Children’s Hospital, also revealed that 45 percent of parents do not require their kids to use a booster when driving other children who do not have one.

“The majority of parents reported that their children between the ages of four and eight use a safety seat when riding in the family car,” says Michelle Macy, M.D., M.S., a clinical lecturer of emergency medicine at the University of Michigan Medical School and an investigator with the U-M Child Health Evaluation and Research Unit. “However, it’s alarming to know that close to 70 percent of parents carpool, and when they do, they’re often failing to use life-saving booster seats.”

Researchers believe practical barriers, including limited vehicle space and difficulties making arrangements with other drivers, lead parents to abandon safety seats when carpooling.

Results of the study were published online today ahead of print in Pediatrics.

Most state laws require children to use a booster seat, many until children are 8 years old. National recommendations encourage the use of booster seats until a child reaches 57 inches, which is the average height of an 11-year-old.

Placing a child in an adult seat belt prematurely can cause shoulder and lap belts to fit improperly, negating the life-saving benefits of seatbelts. Click here to see the Insurance Institute for Highway Safety’s recommendations as to how seat belts should fit.

“Therefore, parents who do not consistently use booster seats for kids who are shorter than 57 inches tall are placing children at greater risk of injury,” says Macy. “Parents need to understand the importance of using a booster seat for every child who does not fit properly in an adult seat belt on every trip.”

Study authors suggest that social norms may be set by state booster seat laws, as parents are motivated to follow guidelines set forth by law. State booster seat laws were associated with higher safety seat use, regardless of carpooling, even though half of parents surveyed admit to not knowing the age cited in their state booster seat law and another 20 percent guessed incorrectly.

“According to current recommendations most children should be using booster seats beyond the age cited in state laws. As many parents may not even be aware of current booster seat recommendations, pediatricians should make it a priority to share this vital information with them,” says Macy.

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Additional Resources:
Insurance Institute of Highway Safety recommendations for proper seat belt fit,
Insurance Institute for Highway Safety recommended booster seats.

Citation: doi: 10.1542/peds.2011-0575

Additional authors: Sarah J. Clark, M.P.H., Gary L. Freed, M.D., M.P.H., Amy T. Butchart, M.P.H., Dianne C. Singer, M.P.H., Comilla Sasson, M.D., M.S., William J. Meurer, M.D., M.S., and Matthew Davis, M.D., M.A.A.P.

Disclosures: None

About C.S. Mott Children’s Hospital:
The University of Michigan C.S. Mott Children’s Hospital is consistently ranked as one of the best hospitals in the country. It was nationally ranked in all ten pediatric specialties in the U.S. News Media Group’s 2011 edition of "America’s Best Children’s Hospitals" including third in the country for heart and heart surgery. In December, the hospital moves to a new 1.1 million square feet, $754 million state-of-the-art facility that will be home to cutting-edge specialty services for newborns, children and women.
 

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