A study of drug abuse nationwide says overdose deaths in Hawaii increased 68 percent between 1999 and 2010, to 10.9 deaths per 100,000 residents.
The study released Monday by the Trust for America's Health says the rate is nearly three times the 1979 rate of 3.8 overdose deaths per 100,000 residents.
The advocacy group says the majority of overdose deaths in the state came from prescription drugs.
The study says Hawaii is one of 29 states where drug overdose deaths exceed deaths from motor vehicle accidents.
The study cites Centers for Disease Control Data that says Hawaii had 9.1 motor vehicle deaths per 100,000 residents in 2010.
Hawaii's drug overdose mortality rate is tied for 34th with Wisconsin among 50 U.S. states and the District of Columbia.