A thread for fellow statistical analysis plan nerds (warning: math ahead).

From Pfizer's protocol, vaccine efficacy will be estimated by the incidence rate ratio. A tutorial on how this corresponds to their planned beta-binomial analysis. 1/6https://t.co/QBJDIrMYQ7 pic.twitter.com/S8YuyRLW3K

— Natalie E. Dean, PhD (@nataliexdean) September 18, 2020