Adam Marcus

‘Coding’ errors prompt retraction of paper on long COVID in kids

JAMA Pediatrics has retracted a controversial 2023 paper on the incidence of long COVID in children after the authors discovered a raft of “coding” errors in their analysis that greatly underestimated the risk of the condition.

The article – a research letter titled “Post–COVID-19 Condition in Children” – was written by a group of researchers in Canada led by Lyndsey Hahn, of the University of Alberta, in Edmonton. It has been cited eight times, according to Clarivate Analytics’ Web of Science, and garnered significant attention on mainstream and social media sites, including by critics who said the authors fatally botched the definition of long COVID.

According to the authors, the incidence of long covid in kids was “strikingly low”, occurring in just 0.4% of young patients. Symptoms of infection in kids typically resolve within two weeks, they added.

But those reassuring findings hinged on several errors in the analysis that made the incidence of long COVID in children look less than a third of what the researchers should have reported.

‘No animosity between us’: Lungless frog finding retracted after 16 years

The Bornean flat-headed frog, via *Current Biology*

In 2008, a group of researchers published a paper in Current Biology reporting on what they said was a lungless water-loving frog in Borneo.

According to David Bickford, then of the National University of Singapore, and his colleagues, the Bornean flat-headed frog “breathed” the way most salamanders do: by absorbing oxygen through their skin or, during earlier phases of life for some species, through gills. (We’re not salamander experts, so if this characterization is a bit crude, don’t come for us.) Because the frog lived in fast-moving streams, the researchers reasoned, it could obtain adequate oxygen to meet its needs.

For the last 15-odd years, that understanding held. But in May, another team of herpetologists, using more sophisticated tools, said they’ve found evidence of lungs – tiny but functional – in the creatures. As the New Scientist magazine reported earlier this year:

Journal retracts redundant case study of same patient from different authors

Cureus has retracted a 2024 case study after learning it had published a piece about the identical patient, by authors from the same institution, just months earlier.

The paper, “Lipoma Growing on the Back for 26 Years: A Bizarre Case Report,” was published March 26 and retracted June 17. Three of the four authors are affiliated with Datta Meghe Institute of Higher Education and Research, in Wardha, India. The corresponding author, Samiksha V. Gupta, was a medical student at the institution but has since received his degree.

The notice states:

A retraction milestone: 200 for one author

Numbers are everywhere in retraction land lately: A record 10,000-plus retractions in 2023. 19 journals shut down at Wiley. Now here’s another.

Readers who have checked the Retraction Watch leaderboard lately may have picked up on something notable: One researcher, Joachim Boldt, has now been credited with 210 retractions – making him the first author (to our knowledge) with more than 200 retractions to his name.

Boldt’s new tally – representing about half of his roughly 400 publications – admittedly is an accounting change rather than new problems being identified. Some journals have only now come around to acting on the corrupt articles. In that sense, it reflects both progress and a frustrating lack of concern-slash-urgency on the part of the journals that have taken more than a decade to resolve the case.

Cureus retracts paper for plagiarism following Retraction Watch inquiries

The journal Cureus has retracted a 2022 paper on cancer and the environment just weeks after Retraction Watch raised questions about apparent plagiarism in the article.

As we reported in early April, the paper, “Causes of Cancer in the World: Comparative Risk Assessment of Nine Behavioral and Environmental Risk Factors”, had a bit of a twinsies thing going with a 2005 article in The Lancet – sharing a title, figures, and wording that “follows the Lancet one on a sentence-by-sentence level while using tortured phrases,” according to the anonymous tipster who informed us of the issue.

The April 19 retraction notice states:

Publisher retracts more than a dozen papers at once for likely paper mill activity

The Scottish Medical Journal has retracted more than a dozen papers dating back to 2020 after concluding the articles were likely produced by one or more paper mills.

The articles, all by researchers in China, covered a range of topics including back pain, pancreatic cancer, hand hygiene and sepsis. Most were meta-analyses.

Here’s the blanket notice for the 13 papers, which the publisher, Sage, lists by url but not title:

Embattled researcher Didier Raoult earns more than 100 expressions of concern and another retraction

An Elsevier journal has issued just over 100 expressions of concern for papers published by a group of researchers led by the French microbiologist Didier Raoult, who also notched a new retraction – his tenth – in a separate publication.

As we and others have reported, Raoult’s work during the COVID-19 pandemic drew intense scrutiny from data sleuths, most notably Elisabeth Bik – whose critiques, which extended beyond his COVID studies, were met with vicious online trolling and a legal complaint filed by Raoult himself.

The allegations prompted an ethics investigation by the French National Agency for the Safety of Medicines and Health Products into Raoult’s research during his tenure at the IHU Méditerranée Infection, in Marseille, which he led between 2011 and his retirement as director in 2022. That inquiry found “serious shortcomings and non-compliances with the regulations for research involving the human person.”

The 101 expressions of concern come for papers Raoult and his colleagues published in New Microbes and New Infections. Here’s an example of one of the EoC’s, for “Genome sequence and description of Anaerosalibacter massiliensis sp. nov.,” which Raoult’s group published in March 2016:

Paper claiming vaping tops nicotine gum for smoking cessation retracted from JAMA journal

A JAMA journal has retracted a paper on vaping it published two months ago after the researchers alerted the editors to “significant coding errors” and other problems with the work.

The article, “Efficacy of Electronic Cigarettes vs Varenicline and Nicotine Chewing Gum as an Aid to Stop Smoking: A Randomized Clinical Trial,” was written by a group from China led by Zhao Liu, of the Department of Tobacco Control and Prevention of Respiratory Disease at China-Japan Friendship Hospital, in Beijing.

According to the researchers, the study found use of vapes was no worse than a prescription medication, and better than nicotine gum, at helping people quit smoking.

The paper received a significant amount of attention in the medical and lay press and on social media (full disclosure: Medscape, where Adam works, covered it).

Here’s the March 29 retraction notice for the paper, which originally appeared online in JAMA Internal Medicine January 29:

Exclusive: ‘Bust Size and Hitchhiking’ author to earn four more expressions of concern

The journal Social Influence will be issuing expressions of concern for four papers by Nicolas Guéguen, a marketing researcher whose work has long been dogged by allegations, Retraction Watch has learned.

Guéguen has to date has lost at least three papers to retraction, and has received many more expressions of concern, for his questionable studies. However, his institution, the Université de Bretagne-Sud, cleared him of wrongdoing in 2019.

Guéguen made a name for himself for his quirky studies – often about human sexuality – like one purporting to find women with bigger breasts were more likely to be successful hitchhikers; and one which claimed to find men with guitar cases are more attractive to women. (The first of those articles has an expression of concern; the second was retracted in 2020.)

Chief researcher at national Japanese institute has paper retracted for faking data

An official journal of the Japanese government has retracted a 2021 paper over concerns about misconduct in the work, which was performed in a national research center.

Here’s the retraction notice for the paper, titled “Development and Evaluation of Fluorescence Immunochomatography for Rapid and Sensitive Detection of Thermophilic Campylobacter”:

Food Safety decided to retract this article in which the primary author misconducted as reported from the primary author’s affiliation.

Far more details are available in materials published last December by Japan’s National Institute of Health Sciences, where the first author of the article, Hiroshi Asakura, is chief researcher. According to a press release dated Dec. 26, 2023:

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