E-Cigarettes vs. Nicotine Replacement Treatments in Smoking Cessation

Study Overview

E-cigarettes and nicotine replacement therapies have been utilized to assist individuals in quitting smoking. A study published in The New England Journal of Medicine examined the effectiveness of these two methods. This randomized, controlled trial involved 886 participants between May 2015 and February 2018, all seeking assistance from support services to quit smoking.

Methodology

Participants selected a quit date and were subsequently assigned either to the e-cigarette group (439 participants) or the nicotine replacement group (447 participants). The nicotine replacement options included various products such as sprays, gum, and patches. Each participant also received personalized behavioral support from professionals.

After four weeks, researchers assessed participants’ expired carbon monoxide levels. Participants reported their withdrawal symptoms and evaluated their experiences with the products they used, including issues like nausea, sleep irregularities, throat discomfort, and respiratory symptoms, such as coughing and wheezing.

Findings on E-Cigarettes

The study’s findings indicated that e-cigarettes were more effective in facilitating smoking cessation. The e-cigarette group achieved a one-year sustained abstinence rate of 18%, compared to 9.9% in the nicotine replacement group. Throughout the trial, e-cigarette users consistently demonstrated higher abstinence rates.

Participants reported greater satisfaction with e-cigarettes than with nicotine replacement products. Those using e-cigarettes experienced lower cravings and less irritability compared to their counterparts using nicotine replacement therapies. Additionally, the nicotine replacement group reported higher levels of nausea, while the e-cigarette group experienced more throat and mouth discomfort. Despite this, both groups showed improvements in cough and phlegm presence, with the e-cigarette group experiencing fewer symptoms after 52 weeks.

Limitations and Conclusions

One limitation of the study was that expired carbon monoxide tests only measured smoking within the previous 24 hours, which could have led to false negatives. Nonetheless, this trial demonstrated a higher success rate for e-cigarettes compared to prior studies. The authors attributed this success partly to the participants’ motivation to quit and the effective one-on-one behavioral support they received.

References

E-cigarettes more effective than nicotine replacement therapies, finds major trial. 2019, https://www.eurekalert.org/pub_releases/2019-01/qmuo-eme012919.php, assessed 14 Mar. 2019.
Hajek, Peter. “A Randomized Trial of E-Cigarettes Versus Nicotine-Replacement Therapy”. The New England Journal of Medicine. 2019. 1-9. Online.