Fig. 1From: A scoping review of studies using observational data to optimise dynamic treatment regimensA decision tree containing several possible dynamic treatment regimens (DTRs). Shown are binary covariates (O1, O2), binary treatments (A1, A2), and a terminal outcome (Y) that is a function of patient history. The decisions that map the accumulated patient history to a treatment are represented as the functions d1(.) and d2(.)Back to article page