Additional file 1: Figure S1. Selection diagram fortransportability analysis of the effects of stimulant use on initiation ofmedication for opioid use disorder (MOUD). Variables in gray text were notmeasured in one target population; those in gray boxes were not measured in anytarget population. Table S1. Inclusion andexclusion criteria, recruitment, screening and enrollment data for CTN clinicaltrials. Table S2. Inverse probabilityof selection weight models. Table S3.Distributions of inverse probability of selection weights and bias-variance tradeoffin weight trimming. Bias and precision of the stimulant use estimates arecomputed relative to untrimmed weights.