CHICAGO (AP) — Drug overdose deaths rose for the 11th straight year, federal data show, and most of them were accidents involving addictive painkillers despite growing attention to risks from these medicines.

In 2010, there were 38,329 drug overdose deaths nationwide, according to a new report from the Centers for Disease Control and Prevention. Medication, mostly prescription drugs, was involved in nearly 60 percent of overdose deaths that year, overshadowing deaths from illicit narcotics.

"The big picture is that this is a big problem that has gotten much worse quickly," said Dr. Thomas Frieden, CDC's director.