Smokers in clinical studies who say they've quit often haven't

This nationwide study followed five large smoking cessation clinical trials in the US that enrolled smokers at hospitalization. At 6-month follow-up, 822 participants (out of 4,206 who completed the follow-up survey) reported they had not smoked in the past 7 days and provided a usable saliva sample for verification by testing for a chemical called 'cotinine'. The liver converts nicotine in the body to cotinine and so this chemical is a very accurate measure of whether someone has smoked in the past few days. More than 40% of those 822 self-reported quitters failed the saliva test.
The misreporting rate may be even higher because, despite the offer of $50 to $100 for providing a sample 18.6% of people who had said they had quit smoking did not reply, even after multiple attempts. These participants were excluded from the study. The study also excluded anyone who said they were using another nicotine product such as smokeless tobacco, nicotine patches or e-cigarettes. Even very heavy exposure to other people smoking would not have raised cotinine levels to those found in this study.
Lead author Dr. Taneisha Scheuerman says "Our study shows that in studies where participants may feel pressure to say they have quit when they have not, it is essential to verify claims of quitting using an objective test such as cotinine to know true quit rates. For clinical researchers, another important finding is that misreporting rates were similar across intervention and control conditions, suggesting that the relative effectiveness of interventions tested was the same using self-report and cotinine levels."
Professor Robert West, Editor-in-Chief of the journal, Addiction, that published the article comments, "Other research has shown very low misreporting rates in population surveys of smoking. Hospital patients and pregnant women would be likely to feel strong pressure to have stopped smoking."



for more information visit our product website:Buy Suhagra 50 mg Online 
Location: United States

Comments

Post a Comment

Popular posts from this blog

Methamphetamine use linked to heightened stroke risk in the young

A stroke caused by a bleed into the brain ( haemorrhagic ) rather than a clot (ischaemic) is the most common type associated with taking this drug, with men twice as likely to succumb as women, the findings show. Given the often disabling or fatal consequences of a stroke, and the increasing use of methamphetamine among young people, particularly in countries around the Pacific rim (North America, East and Southeast Asia, and Oceania), the findings are a cause for concern, warn the researchers. They base their findings on a comprehensive trawl of research looking at a potential link between methamphetamine use and associated stroke risk in young people (under the age of 45), and published up to February 2017. They found 77 relevant pieces of research out of 370, including epidemiological studies and case report series. Some 81 haemorrhagic and 17 ischaemic strokes were reported. Both types were around twice as common in men as they were in women. In the case reports/series,...
Read more

Could nicotine reduction help curb addiction?

The study appears in  JAMA Psychiatry . The Vermont Center on Behavior and Health (VCBH) at UVM focuses on the relationship between behavior and health, particularly in disadvantaged populations, a group that is "overrepresented" among smokers, according to the study's authors. In their latest study, the research team, led by Stephen Higgins, Ph.D., professor of psychiatry and VCBH director, examined the addiction potential of cigarettes with reduced nicotine content in three vulnerable populations of smokers -- individuals with psychiatric disorders (i.e., affective disorders, opioid-use disorder), and socioeconomically disadvantaged women. "Evidence in relatively healthy and socially stable smokers indicates that reducing the nicotine content of cigarettes reduces their addictiveness," says Higgins. "Whether that same effect would be seen in populations highly vulnerable to tobacco addiction was unknown." The multi-site, double-blind study i...
Read more

New vaccine could someday fight the effects of opioid combinations

The researchers are presenting their work today at the 254th National Meeting & Exposition of the American Chemical Society (ACS). "There is an urgent need to discover effective medications to treat substance use disorders. Increasingly, drug users are turning to opioids and powerful synthetic versions of these drugs that can sometimes be as much as 100 times more potent than heroin," says Kim D. Janda, Ph.D., who led the research into the vaccines. "Moreover, many patients receiving treatment relapse." The rise of synthetic opioids such as fentanyl is a critical element in the opioid crisis in the U.S. Heroin laced with fentanyl or fentanyl alone have contributed to the dramatic rise in overdose deaths among addicts. Janda's team at the Scripps Research Institute has prepared a vaccine that is effective against fentanyl and has made progress in the development of a combination vaccine that offers protection from both heroin and fentanyl. In addition ...
Read more