Category: data issues

Stats mistake crashes bike accident paper

Image via Thomas Hawk
Image via Thomas Hawk

Two researchers at the University of Saskatchewan in Canada have retracted a paper that came to fairly common-sense conclusions about bike safety.

In the September 2014 issue of the Journal of Transport and Health, the authors concluded that slippery road surfaces, night-time biking, and higher speed limits were all associated with higher probabilities of a bicycle accident.

Despite these logical conclusions, the authors discovered a statistical error that “would significantly change the discussion,” according to the retraction notice.

Continue reading Stats mistake crashes bike accident paper

Science chemistry paper earns retraction after expression of concern, marking second for UT group

scienceThe authors of a 2011 Science paper that proposed a new way to direct chemical bonds have withdrawn the paper after concerns about the data prompted an investigation and Editorial Expression of Concern last year from the journal. The retraction is the second for the group, which has also had seven other expressions of concern.

After a reader emailed the editors to raise suspicions about the data, corresponding author Christopher W. Bielawski, then based at the University of Texas at Austin, led an investigation of all the figures. It found substantial problems: “In over 50% of the figure parts, the authors deemed the data unreliable due to uncertainty regarding the origin of data or the manner in which the data were processed,” according to the retraction notice.

UT Austin concluded that there had been misconduct, but did not elaborate.

Continue reading Science chemistry paper earns retraction after expression of concern, marking second for UT group

Misconduct forces retraction of health behavior paper

j behav medA pair of psychology researchers at West Virginia University have lost their 2013 article in the Journal of Behavioral Medicine after one of the authors was found to have cooked the data.

The paper, “Preference for immediate reinforcement over delayed reinforcement: relation between delay discounting and health behavior,” was written by Shane Melanko and Kevin Larkin. It examined whether people who place less importance on the future were also less likely to adopt healthy behaviors, which come with delayed benefits. Melanko, then a doctoral candidate under Larkin, was evidently at one time a psychology student of some promise.

That promise might go unfulfilled. According to the retraction notice: Continue reading Misconduct forces retraction of health behavior paper

Matlab mixup sinks Journal of Neuroscience paper

journal of neuroscienceA team of neuroscientists at University of Oregon and the University of California, San Diego (UCSD) have retracted a paper from The Journal of Neuroscience after realizing their analytic code contained an error.

The authors state in the notice that their conclusion remains accurate after correcting the mistake in the program Matlab. However, the paper — which examined the role of neuronal oscillations in working memory — still contained “some findings that we no longer believe to be robust.”

It’s a very useful notice: Continue reading Matlab mixup sinks Journal of Neuroscience paper

Report on pot and crime goes up in smoke as RAND retracts it

photo by Torbin Bjorn Hansen via Flickr http://flic.kr/p/4v9zbC

Maybe they just hallucinated it.

The RAND Corporation has retracted a study linking Los Angeles pot dispensaries to drops in crime, the Los Angeles Times reports. The problem: RAND hadn’t included data from the Los Angeles Police Department (LAPD). The institute tells the Times, referring to RAND researchers:

“They made mistakes,” said Debra Knopman, a Rand vice president and director of the infrastructure, safety and environment division. “What we’re wrestling with is how the mistakes went undetected.”

The report was peer-reviewed, RAND said, and retractions are uncommon: Continue reading Report on pot and crime goes up in smoke as RAND retracts it

Unprecedented? Journal yanks transcendental meditation paper 12 minutes before it’s scheduled to publish

There’s a highly unusual situation brewing at the Archives of Internal Medicine. At 3:48 Eastern time on Monday, 12 minutes before the embargo lifted on the June 28 issue of the Archives of Internal Medicine, the following message went out from its press office:

The editorial office of the Archives of Internal Medicine has made the decision not to publish,  “Stress Reduction in the Secondary Prevention of Cardiovascular Disease: A Randomized Controlled Trial of Transcendental Meditation and Health Education in African Americans,” by Schneider et al, and the accompanying Commentary by Mehta and Bairey Merz that was to post Online First at 3 PM central time today.

The decision is to allow time for review and statistical analysis of additional data not included in the original paper that the authors provided less than 24 hours before posting.  We apologize for the short notice, but hope you will understand and not run your stories on this study today.

We asked Archives of Internal Medicine editor Rita Redberg when the paper might be published: Continue reading Unprecedented? Journal yanks transcendental meditation paper 12 minutes before it’s scheduled to publish

More on SPIROCOR noninvasive heart disease test: Second retraction (in fact the first) says little

Since we first wrote about the travails of Spirocor’s bedside, noninvasive test for coronary artery disease, we’ve been trying, without much success, to find out more information.

But as they say about every dog, our day has come.

As we initially reported, Ron Waksman, a prominent Washington, D.C. cardiologist and editor-in-chief of Cardiovascular and Revascularization Medicine, was first author of one of two papers about the Spirocor technology that were published in 2010. The other, by Shiyovich, et al, was retracted earlier this month by the American Journal of the Medical Sciences, which triggered our interest in this case.

At the time, we couldn’t find any evidence that Waksman’s article had been retracted, and Waksman has not responded to multiple requests for comment. Today we spoke with Kate Coons, the journal’s managing editor, who told us that the authors had sought a retraction for the article, “An innovative noninvasive respiratory stress test indicates significant coronary artery disease,” in December, and that it had posted one on its website on Jan. 6 of this year. It will be in print in an upcoming issue.

The notice is not available on Medline, but it can be found on ScienceDirect: Continue reading More on SPIROCOR noninvasive heart disease test: Second retraction (in fact the first) says little

Georgia (well, the Medical College there, anyway) on our minds for a mysterious retraction

We’re watching a case which appears to involve more than meets the eye.

Molecular Endocrinology has retracted a 2010 study by researchers at the Medical College of Georgia. According to the Spartan retraction notice (we added a link): Continue reading Georgia (well, the Medical College there, anyway) on our minds for a mysterious retraction

More on the latest Cell retraction: PI says a graduate student was at fault

Carsten Carlberg

This morning we reported on a new retraction in Cell involving fraud from a lab in Finland, which led us to a second retraction of a paper by the same group in the Journal of Molecular Biology. The first author on both papers was Tatjana Degenhardt, who at the time was a graduate student in the lab of Carsten Carlberg, professor of biochemistry at the University of Kuopio.

A few minutes ago Retraction Watch spoke with Carlberg, who had this to say about Degenhardt: Continue reading More on the latest Cell retraction: PI says a graduate student was at fault

Update on Axel Ullrich retractions: Lead author manipulated figures, says Ullrich

Axel Ullrich, courtesy the Max Planck Institute

Yesterday, we noted that Axel Ullrich, a decorated cancer researcher, had retracted two papers in the Journal of Biological Chemistry. The journal gave no explanation for the retractions, and our conversation with the publication director for the American Society for Biochemistry and Molecular Biology, which puts out the journal, was less than illuminating. This morning, Ullrich responded to all of the questions we sent him by email, and our follow-ups. The picture is now a lot more clear.

Ullrich tells Retraction Watch that he found out from a “private investigator” several months ago that the papers’ lead author, Naohito Aoki, had manipulated their figures. Aoki was a postdoc in Ullrich’s lab in the early 1990s: Continue reading Update on Axel Ullrich retractions: Lead author manipulated figures, says Ullrich