Research Interests
Causal Inference
Instrumental Variables
Observational Studies
Sensitivity Analysis
Causal Inference
Instrumental Variables
Observational Studies
Sensitivity Analysis
Preprints
Heng, S. and Small, D. S. On interactions between observed and unobserved covariates in matched observational studies. Submitted.
Heng, S.*, Zhang, B.*, Han, X., Lorch, S. A., and Small, D. S. Instrumental variables: to strengthen or not to strengthen? Submitted.
Heng, S.*, Kang, H.*, Small, D. S., and Fogarty, C. B. Increasing power for observational studies of aberrant response: an adaptive approach. Submitted.
Publications
Heng, S., Small, D. S., and Rosenbaum, P. R. Finding the strength in a weak instrument in a study of cognitive outcomes produced by catholic high schools. Journal of the Royal Statistical Society: Series A, to appear.
Sondak, D., Hawley, C., Heng, S., Vinsonhaler, R., Lauga, E. and Thiffeault, J. L. Can phoretic particles swim in two dimensions? Physical Review E, 94, 062606.
(* indicates equal contribution)