Correction to: Graphing and reporting heterogeneous treatment effects through reference classes (Trials, (2020), 21, 1, (386), 10.1186/s13063-020-04306-1)

James A. WatsonChris C. HolmesUniversity of OxfordMahidol UniversityNuffield Department of Medicine2020-11-182020-11-182020-12-01Trials. Vol.21, No.1 (2020)174562152-s2.0-85092898064https://repository.li.mahidol.ac.th/handle/20.500.14594/60017© 2020, The Author(s). Following publication of the original article [1], we were notified that Eq. (1) is wrong and needs replacing. Eq. 1 should have been written: (Formula presented.)This has divided the sum into its two component parts and replaced the symbol C in the previous version with C1 and C0.Instead of: (Formula presented.)the definition of C1 and C0 is given by: (Formula presented.)In addition, in Eq. (2) and at multiple instances after, γ/N needs to be replaced by γN (there should not be a division symbol).Mahidol UniversityMedicineCorrection to: Graphing and reporting heterogeneous treatment effects through reference classes (Trials, (2020), 21, 1, (386), 10.1186/s13063-020-04306-1)ErratumSCOPUS10.1186/s13063-020-04782-5