We're unable to sign you in at this time. Please try again in a few minutes.
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
Research Letter |

A Longitudinal Analysis of Electronic Cigarette Use and Smoking Cessation

Rachel A. Grana, PhD, MPH1; Lucy Popova, PhD1; Pamela M. Ling, MD, MPH1,2
[+] Author Affiliations
1Center for Tobacco Control Research and Education, University of California, San Francisco
2Division of General Internal Medicine, Department of Medicine, University of California, San Francisco
JAMA Intern Med. 2014;174(5):812-813. doi:10.1001/jamainternmed.2014.187.
Text Size: A A A
Published online


Although electronic cigarettes (e-cigarettes or electronic nicotine delivery systems) are aggressively promoted as smoking cessation aids,1 studies of their effectiveness for cessation have been unconvincing.2,3 One randomized trial comparing e-cigarettes with and without nicotine with a nicotine patch found no differences in 6-month quit rates.2 Population-based, longitudinal studies have also not shown associations between e-cigarette use and quitting.4,5 A longitudinal, international study found that, although 85% of smokers who used e-cigarettes reported using them to quit, e-cigarette users did not quit more frequently than nonusers (P = .52).4 Among US quitline callers, e-cigarette users were less likely to have quit at 7 months than nonusers.5 We conducted a longitudinal analysis of a national sample of current US smokers to determine whether e-cigarette use predicted successful quitting or reduced cigarette consumption.

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal

First Page Preview

View Large
First page PDF preview





Also Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.
Submit a Comment
A civilian comment
Posted on April 1, 2014
Sherri Simancas
Conflict of Interest: None Declared
I saw your study quoted on CBS news and wanted to give you a lay-persons viewpoint.First, I haven't seen e-cigarettes being aggressively advertised in my area as a smoking cessation aid or otherwise. Word of mouth has been the predominant method of delivery, which leads to the next point. I personally know at least 20 people who have stopped smoking by using e-cigarettes. I know of one person that tried them and did not.I am commenting because I come into contact with so many other people I do not personally know that can confirm the same information about their friends and family. There is a store here locally that makes their own \"juices\" and has over 100 customers a day, all former smokers who have stopped smoking. They are thrilled to be breathing easier, saving money and many other benefits in contrast to smoking tobacco. I find this study to be such a contradiction to everything I am seeing and hearing. How can it be that there are so many people now \"vaping\" and not smoking, yet this article concludes it is not working. If it were not working, these vape shops would not be popping up in ever city block and even in small towns here in Arkansas. The business is growing leaps and bounds, which could not be possible of people were only trying them, then stopping to resume smoking.Now I am seeing that this study and others like it only create conspiracy theories that our top scientists are being funded by everything from tobacco lobbyists to those who don't want to state governments that don't want to lose tax dollars. Read comments on news sites, they all contradict the results of these studies. It's sad, because it reduces the credibility of other published research when the general population sees this and knows it is complete opposition to what they are seeing. Thank you for listening.
Submit a Comment


Some tools below are only available to our subscribers or users with an online account.

Web of Science® Times Cited: 21

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal

Related Content

Customize your page view by dragging & repositioning the boxes below.

See Also...
Articles Related By Topic
Related Collections
PubMed Articles
Electronic Cigarettes: Vulnerability of Youth. Pediatr Allergy Immunol Pulmonol 2015;28(1):2-6.