WhenĪsked if the study was to establish new scientific knowledge that could be generalizedįor the care of similar patients undergoing that procedure, the potential author indicated
Research Ethics Committee or by an Institutional Review Board (IRB), the potentialĪuthor explained that they had not sought approval, but that if the study were completedĪnd if it showed clinically meaningful results, then approval of such an oversightīody would be sought in anticipation of submitting the work for peer review. When asked if the investigation had been approved by a Potential author said it was not, but that it had become the “standard of practice”įor one of the co-authors. WhenĪsked if obtaining these images was considered the usual and customary practice, the Had undergone and were going to undergo an established surgical intervention. Preoperative and postoperative corneal endothelial cell counts on all patients who The potential author explained that an associate was gathering
#Retrospective study how to#
#Retrospective study registration#
I confirm that any such study reported in the manuscript has been registered and the trial registration ID is provided (note: if posting a prospective study registered retrospectively, please provide a statement in the trial ID field explaining why the study was not registered in advance). I understand that all clinical trials and any other prospective interventional studies must be registered with an ICMJE-approved registry, such as. I confirm that we have followed all relevant ethical guidelines on this manuscript.Īll necessary patient/participant consent has been obtained and the appropriate institutional forms have been archived. The details of the IRB/oversight body that provided approval or exemption for the research described are given below: I confirm all relevant ethical guidelines have been followed, and any necessary IRB and/or ethics committee approvals have been obtained. 713679 and from the Universitat Rovira i Virgili (URV). acknowledges financial support from the European Union Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No.
acknowledges financial support from Beatriz de Galindo (Ministerio de Ciencia, Innovacion y Universidades). FIS2017-87519-P) and from the Departamento de Industria e Innovacion del Gobierno de Aragon y Fondo Social Europeo (FENOL group E-19). acknowledge financial support from MINECO and FEDER funds (Project No. also acknowledges support from Generalitat de Catalunya (PDAD1), ICREA Academia, and the James S. 2017SGR-896), and Universitat Rovira i Virgili (Grant No. acknowledge financial support from Spanish MINECO (Grant No. Funding Statementįunding: A.A., B.S., and S.G. However, a causal statement on this association usually should not be made from a retrospective study. In this kind of study, the outcome has already happened when the study is being conducted. A retrospective study design allows the investigator to formulate hypotheses about possible associations between an outcome and an exposure and to further investigate the potential relationships. The authors have declared no competing interest. A retrospective study design involves collecting data from the past to examine exposures to suspected risk or protection factors in relation to an outcome that is established at the beginning of the study. Teaser “We propose a backward analysis of pandemic incidence in a region to determine the correct timing of authorities’ non-pharmaceutical interventions to fight COVID-19” Competing Interest Statement
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