MISSOULA, Mont. -

According to a CDC national study, teenagers are increasingly using electronic cigarettes. E-cigarettes are battery-powered devices that often utilize cartridges that contain nicotine. 

According to the newly released study, roughly 2 percent of surveyed students claimed they had used an e-cigarette in a previous month in 2012, compared to 1 percent in 2011. 

According to the research, roughly 3 percent of teenagers said they had tried an electronic cigarette at least once in 2011, but that rose to 7 percent in 2012. That figure means nearly 1.8 million students nationwide said they had tried an e-cigarette.

Hellgate High School Resource Officer Jim Johnson tells NBC Montana that he has confiscated e-cigarettes from students, though he hasn’t seen the trend catch-on locally because of the cost of the devices.