4 papers · 1 filter
Identifying Panel Conditioning with Refreshment Samples: Sharp Bounds and Design Assumptions
Shoki Okubo
Refreshment samples are the standard remedy for panel attrition, and the identification results behind them maintain that participation does not change measurement. We characterize…
Panel Conditioning in Fixed-Effects Models: Identification and Bias Propagation
Shoki Okubo
Panel conditioning, the causal effect of prior survey participation on responses, can vary with tenure. Under an additive model of cell means in period, entry cohort, and tenure, w…
A Multiverse of Good and Bad Controls: Candidate Causal Graphs for Interpreting Model Robustness Analysis
Shoki Okubo
Model robustness analysis estimates an effect across a multiverse of specifications that pools control sets identifying the declared estimand with sets that condition on mediators…
Optimal Covariate Adjustment beyond the Average Treatment Effect: Treated-Population and Overlap-Weighted Estimands
Shoki Okubo
Graphical causal inference supplies a complete theory of efficient covariate adjustment for the average treatment effect: one adjustment set, computable from the graph, is optimal…