Vaping and Heart Failure: Did the News Get It Right? An Analysis of Scientific Content Translation Frequency from Abstract, Poster, and Press Release to News Coverage of the 2024 Medstar/American College of Cardiology Study of the All of Us NIH Database

Background: Cigarette smoking remains a leading cause of death and illness in the US and globally. Electronic cigarettes (ECs) were introduced as a potentially less harmful alternative and are now used by approximately 20 million American adults. How scientific studies on ECs are reported can significantly influence perceptions of adults who smoke who might consider alternative products.A 2024 non peer-reviewed study by Medstar Health researchers who analyzed data from the All of Us NIH database found a 19% increased risk of heart failure (HF) among ever-users of ECs. This finding was announced by the American College of Cardiology (ACC) in a press release, and was reported on by over 25 news organizations in the US and England. Methods This analysis investigated the translation frequency of Medstar study-related data across four stages: the original database, the researchers' analysis, the press release issued, and subsequent news media coverage. Instances of material omissions, unsupported claims, and confirmation bias throughout the dissemination process were identified and discussed. Results The analytic sample (n=1,073) represented coverage by general news sites (n=17) and science news sites (n=12) of material scientific content items (n=37) present in the abstract, poster and/or press release.News reports on average, republished 47-48% of the content items present in the press release. Specifically, general news sites included 66% of the author quotes and 42% of the data points from the press release (52% and 47% for science news sites, respectively). Strikingly, content present only in the study's abstract and/or poster, but absent from the press release, was omitted by all general news sites and largely ignored by science news sites (only 12% inclusion). Critical omissions included that exclusive EC use was not associated with a significant increase in HF, and the impact of combusted cigarette (CC) smoking in dual-users was discounted as having a minimal association with HF. These details were absent in the press release, as well as in almost all subsequent news reports. Conclusion / Implications The accuracy and precision of news reporting on the Medstar study could have been substantially improved if the press release had been clearer about the contradictions and limitations of the study findings, and if news outlets had thoroughly examined and reported the complete study findings, including the abstract and underlying data, rather than primarily transmitting quotations from the press release. This points to areas for improvement in science reporting quality, which could benefit public health literacy.