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Expressions of concern (EoC) can reduce the adverse effects of unreliable publications by alerting readers to concerns about publication integrity while assessment is undertaken. We investigated the use of EoC for 463 publications by two research groups for which we notified concerns about publication integrity to 142 journals and 44 publishers between March 2013 and February 2020. By December 2021, 95 papers had had an EoC, and 83 were retracted without an EoC. Median times from notification of concerns to EoC (10.4mo) or retraction without EoC (13.1mo) were similar. Among the 95 EoCs, 29 (30.5%) were followed by retraction after a median of 5.4mo, none was lifted, and 66 (69.5%) remained in place after a median of 18.1mo. Publishers with >10 notified publications issued EoCs for 0–81.8% of papers: for several publishers the proportions of notified papers for which EoCs were issued varied considerably between the 2 research groups. EoCs were issued for >30% of notified publications of randomized clinical trials and letters to the editor, and <20% of other types of research. These results demonstrate inconsistent application of EoCs between and within publishers, and prolonged times to issue and resolve EoCs. [ABSTRACT FROM AUTHOR]

Too often, journal assessments of potentially unreliable research are superficial, opaque and prolonged. Changes to the guidance given by the Committee on Publication Ethics could tighten up the process. [ABSTRACT FROM AUTHOR]

Retracted clinical trials may be influential in citing systematic reviews and clinical guidelines. We assessed the influence of 27 retracted trials on systematic reviews and clinical guidelines (citing publications), then alerted authors to these retractions. Citing publications were randomized to up to three e-mails to contact author with/without up to two coauthors, with/without the editor. After one year we assessed corrective action. We included 88 citing publications; 51% (45/88) had findings likely to change if retracted trials were removed, 87% (39/45) likely substantially. 51% (44/86) of contacted citing publications replied. Including three authors rather than the contact author alone was more likely to elicit a reply (P = 0.03). Including the editor did not increase replies (P = 0.66). Whether findings were judged likely to change, and size of the likely change, had no effect on response rate or action taken. One year after e-mails were sent only nine publications had published notifications. E-Mail alerts to authors and editors are inadequate to correct the impact of retracted publications in citing systematic reviews and guidelines. Changes to bibliographic and referencing systems, and submission processes are needed. Citing publications with retracted citations should be marked until authors resolve concerns. [ABSTRACT FROM AUTHOR]