Imran, MahrukhMc Cord, KimberlyMcCall, Stephen J.Kwakkenbos, LindaSampson, MargaretFröbert, OleGale, ChrisHemkens, Lars G.Langan, Sinéad MMoher, DavidRelton, ClareZwarenstein, MerrickJuszczak, EdmundThombs, Brett D.CONSORT Extension for Trials Conducted Using Cohorts and Routinely Collected Data Group2022-04-152022-04-152022-01-01Imran, M, Mc Cord, K, McCall, S J, Kwakkenbos, L, Sampson, M, Fröbert, O, Gale, C, Hemkens, L G, Langan, S M, Moher, D, Relton, C, Zwarenstein, M, Juszczak, E, Thombs, B D & CONSORT Extension for Trials Conducted Using Cohorts and Routinely Collected Data Group 2022, 'Reporting transparency and completeness in trials : Paper 3 – trials conducted using administrative databases do not adequately report elements related to use of databases', Journal of Clinical Epidemiology, vol. 141, pp. 187-197. https://doi.org/10.1016/j.jclinepi.2021.09.0100895-4356RIS: urn:FBADDD113F491D56D2B3297287701156ORCID: /0000-0003-0078-7010/work/104792450https://hdl.handle.net/2164/18428Acknowledgments The development of CONSORT-ROUTINE and the present review were funded by grants from the Canadian Institutes of Health Research (PI Thombs, #PJT-156172; PIs Thombs and Kwakkenbos, #PCS-161863) and from the United Kingdom National Institute of Health Research (NIHR) Clinical Trials Unit Support Funding (PI Juszczak, Co-PI Gale, supported salary of SM). The views expressed are those of the author(s) and not necessarily those of the NIHR or the Department of Health and Social Care. Dr. Langan was supported by a Wellcome Senior Clinical Fellowship in Science (205039/Z/16/Z). Dr. Moher is supported by a University Research Chair (uOttawa). Dr. Gale was supported by the United Kingdom Medical Research Council through a Clinician Scientist Fellowship. Dr. Thombs was supported by a Tier 1 Canada Research Chair.25551569engAdministrative dataCONSORTCONSORT-ROUTINERandomized controlled trialsReporting guidelineRoutinely collected dataR MedicineWellcome Trust205039/Z/16/ZNational Institute for Health Research (NIHR)Supplementary InformationRJournal article10.1016/j.jclinepi.2021.09.010141