Want to keep your kids from drinking and driving? A new study says not doing it yourself is a good start.

The Substance Abuse and Mental Health Services Administration (SAMHSA) surveyed about 67,000 people over the age of 12 and found that 18 percent of 16- and 17-year-olds who’ve driven under the influence of alcohol or drugs lived with a mother who’d also done so, compared with 11 percent whose mothers hadn’t.

A father’s sway seems even stronger, 21.4 percent of teens living with fathers who drove under the influence copied the behavior, while just 8.4 percent of teens whose fathers didn’t drink and drive had done so.

SAMHSA Administrator Pamela Hyde said the study results prove it’s important for parents to set a good example, adding, “Parents who drink, or drug, and drive not only put their lives and the lives of others at immediate risk, but increase the likelihood that their children will follow down this destructive path.”

[Health.com]