Cite
MLA Citation
SD Walter et al.. “Comment to the reply letter: Letter to the Editor: Preference option randomized design (PORD) for comparative effectiveness research: Statistical power for testing comparative effect, preference effect, selection effect, intent-to-treat effect, and overall effect (SMMR, Vol. 28, Issue 2, 2019).” Statistical methods in medical research, vol. 28, 2019, p. 1603. http://access.bl.uk/ark:/81055/vdc_100081288287.0x00003c