In the end, the investigators found that while almost 10% of the nicotine replacement group were not smoking traditional cigarettes a year later, that figure almost doubled, to 18%, among those using e-cigs to quit.
The participants, who sought NHS' help to quit smoking, were all given behavioral support.
Prof Hajek said he hoped the results of the study would lead to stop-smoking services offering quitters an e-cigarette starter pack and guidance on how to vape, after which they could pay for their own supplies.
'This is now likely to change'.
But two editorials in the same publication threw some cold water on the trial's results.
"The UK specialist stop smoking services will now be more likely to include e-cigarettes among their treatment options, and health professionals will feel more comfortable in recommending e-cigarettes as a stop-smoking intervention".
Independent experts said the latest trial, funded by Britain's National Institute for Health Research and carried out by researchers from Queen Mary University of London, was robust and well-conducted.
They said staff at stop-smoking services have been too reluctant to endorse e-cigarettes, because they have been cautious about the evidence behind them. "We fear that the creation of a generation of nicotine-addicted teenagers will lead to a resurgence in the use of combustible tobacco in the decades to come", said lead author Jeffrey Drazen, editor in chief of NEJM. Perhaps some of them did get further help at shops when replacing the e-liquid received from the researchers (which only amounted to a 2- to 8-day supply, unlike the 90 days of NRT products the other group received).
"The US Food and Drug Administration has not found any e-cigarette to be safe and effective in helping smokers quit", said Jennifer Hobbs Folkenroth, who is the American Lung Association's senior director of tobacco.
Nissan shelving plans to build new X-Trail in United Kingdom , claims report
He said: "Twenty years ago we had these awful , blood-curdling threats about Nissan in Sunderland if we didn't join the Euro". Other Nissan models built at the Sunderland plant include the Qashqai, Juke, Q30, Note and the zero-emission electric Leaf.
The New York Times reports that a yearlong, randomized trial conducted in the UK shows that e-cigarettes are almost twice as effective as smoking cessation products like patches or gum, which in the United States are the only two smoking cessation products approved by the FDA. In fact, you might even expect him to plead with current smokers to switch to e-cigarettes.
Martin Dockrell, Tobacco Control Lead, Public Health England, said: "This landmark research shows that switching to an e-cigarette can be one of the most effective ways to quit smoking, especially when combined with face-to-face support".
The treatment groups also recorded their side effects.
E-cigarettes are nearly twice more effective at helping smokers to quit than traditional methods, according to new research.
Borrelli noted that after one year, 80 percent of the e-cigarette users in the study were still using the devices.
A second survey in 2015-2016 assessed how numerous kids had tried either vaping or smoking in the interim.
Professor Hywel Williams, Director of the NIHR Health Technology Assessment Programme, said: "This groundbreaking NIHR-funded study provides clear evidence that e-cigarettes are nearly twice as effective as nicotine replacement therapy for helping smokers to quit".
The researchers didn't test e-cigarettes against new drugs such as Pfizer's Chantix, which has shown higher rates of success than older nicotine-based treatments.
Because the PATH study data was observational, the researchers admitted their analysis is unable to "establish causal relations or rule out the possibility of residual confounding by underlying risk-taking propensities". Juul's rapid popularity among teens in the USA -which has sparked fears that it could lead more young people to pick up tobacco smoking and reverse the success we've seen with lowering teen smoking rates - might explain the more reluctant attitude of doctors in the U.S.to enthusiastically embrace e-cigarettes as a cessation aid.