Gardner, HeidiElfeky , AdelPickles, DavidDawson, AnnabelGillies, KatieWarwick, VioletTreweek, Shaun2023-06-262023-06-262022-12-27Gardner, H, Elfeky , A, Pickles, D, Dawson, A, Gillies, K, Warwick, V & Treweek, S 2022, 'A good use of time? Providing evidence for how effort is invested in primary and secondary outcome data collection in trials', Trials, vol. 23, 1047. https://doi.org/10.1186/s13063-022-06973-81745-6215PubMedCentral: PMC9793601ORCID: /0000-0001-7890-2854/work/126803751ORCID: /0000-0002-2796-6898/work/126804426ORCID: /0000-0002-7239-7241/work/186968571https://hdl.handle.net/2164/21001Acknowledgements The authors would like to thank Dr Beatriz Goulao from the University of Aberdeen's Health Services Research Unit for her support and statistical expertise when responding to reviewer comments. The Health Services Research Unit, University of Aberdeen, receives core funding from the Chief Scientist Office of the Scottish Government Health Directorates. Funding ORINOCO was funded by the Chief Scientist Office, grant number HIPS/18/04.123653010engSDG 3 - Good Health and Well-beingR MedicineOtherHIPS/18/04Supplementary DatafigshareRJournal article10.1186/s13063-022-06973-823