Category: methodological problems

Divorce study felled by a coding error gets a second chance

home_cover (1)A journal has published a corrected version of a widely reported study linking severe illness and divorce rates after it was retracted in July due to a small coding error.

The original, headline-spawning conclusion was that the risk of divorce in a heterosexual marriage increases when the wife falls ill, but not the husband. The revised results — published again in the Journal of Health and Social Behavior, along with lengthy explanations from the authors and editors — are more nuanced: Gender only significantly correlates with divorce rate in the case of heart disease.

The authors’ note, from Iowa State’s Amelia Karraker and Kenzie Latham, at Indiana University-Purdue University Indianapolis, explains that the coding error led them to over-estimate how many marriages ended in divorce:

Continue reading Divorce study felled by a coding error gets a second chance

Paper on chemtrails, a favorite subject of conspiracy theorists, retracted

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A paper claiming to expose the “tightly held secret” that long clouds trailing from jets are toxic coal fly ash — and not, as the U.S. government says, primarily composed of harmless ice crystals — has been retracted.

The paper is called “Evidence of Coal-Fly-Ash Toxic Chemical Geoengineering in the Troposphere: Consequences for Public Health,” and was published in the International Journal of Environmental Research and Public Health in August. Author J. Marvin Herndon — a geophysicist, and self-described “independent researcher” — also distributed a press release about the findings.

The abstract explains:

The author presents evidence that toxic coal combustion fly ash is the most likely aerosolized particulate sprayed by tanker-jets for geoengineering, weather-modification and climate-modification purposes and describes some of the multifold consequences on public health.

The detailed retraction note, authored by the academic editor of the paper, Paul B. Tchounwou, a biologist at Jackson State University, points out some errors with the science, and notes that the “language of the paper is often not sufficiently scientifically objective:” Continue reading Paper on chemtrails, a favorite subject of conspiracy theorists, retracted

Three retractions for geriatric medicine researcher

Screen Shot 2015-08-20 at 11.51.11 AMA trio of papers on health issues in elderly patients, all sharing an author, have been retracted from Geriatrics & Gerontology International. 

The reasons for the retractions range from expired kits, an “unattributed overlap” with another paper, “authorship issues,” and issues over sample sizes.

Tomader Taha Abdel Rahman, a researcher at Ain Shams University in Cairo, is the first author on two of the papers, and second author on the third.

Here’s the retraction note for a paper that showed elderly adults with chronic hepatitis C are at risk of having cognitive issues:

Continue reading Three retractions for geriatric medicine researcher

Paper on narcissistic CEOs earns big correction

home_coverIt may not be much of a surprise that narcissistic CEOs of pharmaceutical companies will make bold choices, such as adopting radically new technology. That idea remains true, despite a lengthy correction to a paper that supports it.

The paper, “CEO Narcissism, Audience Engagement, and Organizational Adoption of Technological Discontinuities,” in Administrative Science Quarterly, found support for the following hypothesis:

Continue reading Paper on narcissistic CEOs earns big correction

Analysis of pilots with prostate cancer retracted for “inappropriate data”

Aerospace Medicine and Human PerformanceIn case any pilots out there are worrying about their risk of prostate cancer based on a recent meta-analysis that found they are at least twice as likely to develop the disease, they should relax — the paper has been retracted.

The reason: “including inappropriate data from two studies that should be ineligible.”

“The risk of prostate cancer in pilots: a meta-analysis” reviewed eight studies to determine whether airline pilots, who are regularly exposed to radiation and other occupational hazards, have a higher incidence of prostate cancer. However, it also included studies that reported on prostate cancer among all U.S. Armed Forces servicemen, not pilots.

The retraction notice was posted in May — only months after it was published in Aerospace Medicine and Human Performance in February. The notice included a letter to the editor outlining flaws in the meta-analysis and an apologetic response from first author, David Raslau at the Mayo Clinic.

Here’s the notice (appearing at the bottom of page 2):

Continue reading Analysis of pilots with prostate cancer retracted for “inappropriate data”

Trouble with data proves toxic for a pair of toxicology papers

logoA pair of papers about the risks of titanium dioxide nanoparticles that share many of the same authors has been retracted from a toxicology journal following an investigation at Soochow University in China.

Particle and Fibre Toxicology is retracting the papers for problems with the statistical methods and missing data, as well as for sharing figures.

Here’s the note for “Intragastric exposure to titanium dioxide nanoparticles induced nephrotoxicity in mice, assessed by physiological and gene expression modifications:”

Continue reading Trouble with data proves toxic for a pair of toxicology papers

“Gap in the proof” deletes math paper

BAZThe author of a paper on the properties of a vector space is retracting it from The Bulletin of the Australian Mathematical Society after a “false application” of a theorem led to a “gap in the proof.”

Here’s the abstract of “On a Weakly Uniformly Rotund Dual of a Banach Space,” in full:

Every Banach space with separable second dual can be equivalently renormed to have weakly uniformly rotund dual. Under certain embedding conditions a Banach space with weakly uniformly rotund dual is reflexive.

And the retraction note, published in the August issue of the journal:

Continue reading “Gap in the proof” deletes math paper

“To our horror”: Widely reported study suggesting divorce is more likely when wives fall ill gets axed

home_coverA widely reported finding that the risk of divorce increases when wives fall ill — but not when men do — is invalid, thanks to a short string of mistaken coding that negates the original conclusions, published in the March issue of the Journal of Health and Social Behavior.

The paper, “In Sickness and in Health? Physical Illness as a Risk Factor for Marital Dissolution in Later Life,” garnered coverage in many news outlets, including The Washington Post, New York magazine’s The Science of Us blog, The Huffington Post, and the UK’s Daily Mail . 

But an error in a single line of the coding that analyzed the data means the conclusions in the paper — and all the news stories about those conclusions — are “more nuanced,” according to first author Amelia Karraker, an assistant professor at Iowa State University.

Karraker — who seems to be handling the case quickly and responsibly —  emailed us how she realized the error:

Continue reading “To our horror”: Widely reported study suggesting divorce is more likely when wives fall ill gets axed

Cancer Research retraction is fifth for Robert Weinberg; fourth for his former student

13.coverAnother domino has fallen in a chain of retractions for Robert Weinberg, the man who discovered the first tumor-causing gene in humans, along with the first tumor suppressor gene: Cancer Research just retracted a paper of his on some of the molecular steps to metastasis.

The paper, “Concurrent Suppression of Integrin α5, Radixin, and RhoA Phenocopies the Effects of miR-31 on Metastasis,” has been cited 70 times, according to Thomson Scientific’s Web of Knowledge. As we have noted before, Weinberg’s papers are frequently highly cited. His bio at the Whitehead Institute bills him as “a pioneer in cancer research.”

Four of Weinberg’s retracted papers — including this latest — share a first author: Scott Valastyan, once a very promising grad student in Weinberg’s lab. 

This retraction, like Valastyan’s others, is linked to his retracted 2009 Cell paper. (That paper was cited 482 times, and there’s even a video from the Cell press office to go with it). Continue reading Cancer Research retraction is fifth for Robert Weinberg; fourth for his former student

Corrections (and one EoC) propagate for distinguished plant biologist, Olivier Voinnet

Olivier Voinnet
Olivier Voinnet

There may be some deeply rooted issues in the work of high-profile plant biologist Olivier Voinnet, biology department research director at ETH in Zurich. Corrections have continued to pile up months after his work was hit with a barrage of criticism on PubPeer. We’ve tracked a total of seven corrections over the past five months (not including the April retraction of a 2004 paper in The Plant Cell). One of the corrected papers also received an Expression of Concern this week.

Collectively, the corrected papers have accumulated more than 1200 citations.

In January, Voinnet said he planned to correct multiple papers, after receiving “an anonymous email.”

One of the recent corrections we found is for a 2003 article in The Plant Journal, “An enhanced transient expression system in plants based on suppression of gene silencing by the p19 protein of tomato bushy stunt virus,” which details using proteins from a tomato virus to help alter gene expression. The study has been cited 862 times, according to Thomson Scientific’s Web of Knowledge. Here’s the correction notice, posted June 8:

Continue reading Corrections (and one EoC) propagate for distinguished plant biologist, Olivier Voinnet