Featured Research

from universities, journals, and other organizations

Existence of 'trial effect' in HIV clinical trials confirmed

Date:
July 13, 2011
Source:
Public Library of Science
Summary:
A new study has confirmed the existence of a "trial effect" in clinical trials for treatment of HIV.

A new study by investigators from the University of North Carolina at Chapel Hill School of Medicine has confirmed the existence of a "trial effect" in clinical trials for treatment of HIV.

Related Articles


Trial effect is an umbrella term for the benefit experienced by study participants simply by virtue of their participating in the trial. It includes the benefit of newer and more effective treatments, the way those treatments are delivered, increased care and follow-up, and the patient's own behavior change as a result of being under observation.

"Trial effect is notoriously difficult to test," said Prema Menezes, PhD, assistant professor of medicine at UNC and lead author of the study. "Our study used the objective finding of viral load to test our hypothesis," she said.

Researchers compared viral suppression among patients who began highly active antiretroviral therapy (HAART) in a clinical trial with patients who received HAART in routine clinical care in two different time periods, 1996-1999 and 2000-2006. They found clear evidence of a trial effect during the earlier period, but not during the later period. Researchers offer that improvements to antiretroviral therapy (fewer pills and fewer side effects), and the change in attitude to HIV, which has come to be seen by many as a chronic, but treatable infection, may be among the explanations for the lack of demonstrable trial effect in the later period.

"This is the first study to clearly demonstrate a trial effect in HIV clinical trials, and this has important implications moving forward," Menezes said. Documentation of a clinical trial effect should be considered when interpreting the generalizability of clinical trial results. At the same time, the fact that no trial effect was observed in the current HAART period argues that the efficacy demonstrated in clinical trials is likely to predict the effectiveness of the therapy in broader treatment populations. Clinicians and public health officials may have increased confidence that treatment guidelines based on clinical trial data are relevant to routine clinical care.


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Prema Menezes, William C. Miller, David A. Wohl, Adaora A. Adimora, Peter A. Leone, William C. Miller, Joseph J. Eron. Does HAART Efficacy Translate to Effectiveness? Evidence for a Trial Effect. PLoS ONE, 2011; 6 (7): e21824 DOI: 10.1371/journal.pone.0021824

Cite This Page:

Public Library of Science. "Existence of 'trial effect' in HIV clinical trials confirmed." ScienceDaily. ScienceDaily, 13 July 2011. <www.sciencedaily.com/releases/2011/07/110713182219.htm>.
Public Library of Science. (2011, July 13). Existence of 'trial effect' in HIV clinical trials confirmed. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2011/07/110713182219.htm
Public Library of Science. "Existence of 'trial effect' in HIV clinical trials confirmed." ScienceDaily. www.sciencedaily.com/releases/2011/07/110713182219.htm (accessed October 25, 2014).

Share This



More Health & Medicine News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

IKEA Desk Converts From Standing to Sitting With One Button

IKEA Desk Converts From Standing to Sitting With One Button

Buzz60 (Oct. 24, 2014) IKEA is out with a new convertible desk that can convert from a sitting desk to a standing one with just the push of a button. Jen Markham explains. Video provided by Buzz60
Powered by NewsLook.com
Ebola Protective Suits Being Made in China

Ebola Protective Suits Being Made in China

AFP (Oct. 24, 2014) A factory in China is busy making Ebola protective suits for healthcare workers and others fighting the spread of the virus. Duration: 00:38 Video provided by AFP
Powered by NewsLook.com
WHO: Millions of Ebola Vaccine Doses by 2015

WHO: Millions of Ebola Vaccine Doses by 2015

AP (Oct. 24, 2014) The World Health Organization said on Friday that millions of doses of two experimental Ebola vaccines could be ready for use in 2015 and five more experimental vaccines would start being tested in March. (Oct. 24) Video provided by AP
Powered by NewsLook.com
Doctor in NYC Quarantined With Ebola

Doctor in NYC Quarantined With Ebola

AP (Oct. 24, 2014) An emergency room doctor who recently returned to the city after treating Ebola patients in West Africa has tested positive for the virus. He's quarantined in a hospital. (Oct. 24) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins