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DELTA 2 guidance on choosing the target difference and undertaking and reporting the sample size calculation for a randomised controlled trial
| Reporting guideline provided for? (i.e. exactly what the authors state in the paper) |
Reporting the target difference (the effect size) in the sample size calculation of a randomised controlled trial. |
| Full bibliographic reference | Cook JA, Julious SA, Sones W, Hampson LV, Hewitt C, Berlin JA, Ashby D, Emsley R, Fergusson DA, Walters SJ, Wilson ECF, Maclennan G, Stallard N, Rothwell JC, Bland M, Brown L, Ramsay CR, Cook A, Armstrong D, Altman D, Vale LD. DELTA2 guidance on choosing the target difference and undertaking and reporting the sample size calculation for a randomised controlled trial. This guideline was published simultaneously in 2 journals. You can read the guideline in either of the journals using the links below. Trials. 2018;19(1):606. PMID: 30400926 BMJ. 2018;363:k3750. PMID: 30560792 |
| Language | English |
| Reporting guideline acronym | DELTA2 |
| Study design | Clinical trials, Experimental studies, Study protocols |
| Applies to the whole report or to individual sections of the report? | Statistical methods and analyses |
| Previous versions of this guideline / Guideline history | Cook JA, Hislop J, Altman DG, Fayers P, Briggs AH, Ramsay CR, Norrie JD, Harvey IM, Buckley B, Fergusson D, Ford I, Vale LD; DELTA group. Specifying the target difference in the primary outcome for a randomised controlled trial: guidance for researchers. Trials. 2015;16:12. PMID: 25928502 |
| Additional information | Read the protocol for development of this guideline. Read about the development of the DELTA2 guidance. |
| Record last updated on | November 9, 2023 |