16 citations · 56 across the 8 of their papers we have counts for
4 papers · 1 filter
Complier stochastic direct effects: identification and robust estimation
Kara E Rudolph, Oleg Sofrygin, Mark J van der Laan
Mediation analysis is critical to understanding the mechanisms underlying exposure-outcome relationships. In this paper, we identify the instrumental variable (IV)-direct effect of…
Evaluation of adaptive treatment strategies in an observational study where time-varying covariates are not monitored systematically
Noémi Kreif, Oleg Sofrygin, Julie Schmittdiel +5
In studies based on electronic health records (EHR), the frequency of covariate monitoring can vary by covariate type, across patients, and over time. This can lead to major challe…
Causal inference for social network data
Elizabeth L. Ogburn, Oleg Sofrygin, Ivan Diaz +1
We describe semiparametric estimation and inference for causal effects using observational data from a single social network. Our asymptotic results are the first to allow for depe…
Sequential Double Robustness in Right-Censored Longitudinal Models
Alexander R. Luedtke, Oleg Sofrygin, Mark J. van der Laan +1
Consider estimating the G-formula for the counterfactual mean outcome under a given treatment regime in a longitudinal study. Bang and Robins provided an estimator for this quantit…