The research found 40 per cent of those who tried an e-cigarette in the first survey went on to smoke tobacco.
"The people who say that use of e-cigarettes inhibits cessation should be sobered by this paper", said Dr. Steven Schroeder, a physician and tobacco researcher at the University of California, San Francisco.
The rate of people quitting smoking in the USA has remained steady at about 4.5 per cent for years.
The team also found that the United States population-wide smoking cessation rate increased significantly in the study period compared with previous years, with a 5.6% cessation rate in 2014-15 compared with 4.5% in 2010-11, corresponding to 350,000 additional smokers who quit.
While this study provides some evidence that e-cigarettes can help people quit, the devices aren't necessarily without flaws. These findings need to be weighed carefully in regulatory policy making and in the planning of tobacco control interventions'.
The study identified that the cessation rate for smokers who did not use e-cigarettes in 2014-15 was "statistically indistinguishable" from the rate in previous years.
"We found that e-cigarette use was associated with an increased smoking cessation rate at the level of subgroup analysis and at the overall population level".More news: North Korea could launch missile tests as early as today: Julie Bishop
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Study author Professor Guodong Liu from Penn State College of Medicine, said: 'No doubt about it, e-cigarettes are addictive, but not at the same level as traditional cigarettes'.
But scientists remain divided over whether e-cigarettes are a "gateway" to smoking or a less harmful tool that helps smokers quit.
A parliamentary inquiry aimed at reducing red-tape is expected later this year to deliver a report which will deal with the issue of electronic cigarettes and the sale of nicotine liquids.
Earlier this year the Therapeutic Goods Administration rejected an application to exempt nicotine from the unsafe poisons list, which was followed by a Federal Government announcement of a parliamentary inquiry into the ban on nicotine and nicotine-containing devices.
"With proper regulation, we could increase the potential of e-cigarettes to reduce the horrific toll of cigarette smoking in our society", he added. Of these, 38.2% of current smokers and 49.3% of recent quitters tried e-cigarettes and 11.5% of current smokers and 19% of recent quitters reported current use. "Denying Australian smokers this alternative is reckless in the extreme", Mr Rogut said. "If we are serious about reducing the incidence of smoking we should be providing smokers more options".
"This study suggests that we should be receptive to the kind of approach that health authorities in England have taken, encouraging smokers who can not quit otherwise to try e-cigarettes", Warner said.