Reposted by Zikai LiAnton Strezhnev @astrezh.bsky.social · 16/03/2026New version of our paper (w/ @tzkli.bsky.social) on estimating pre-trends placebos in regression imputation DiD! 3 big changes! 2219
Reposted by Zikai LiYiqing Xu @yiqingxu.bsky.social · 25/08/2025Thrilled to share that **fect** has won the 2025 Best Statistical Software Award from the Society of Political Methodology. We're honored! polmeth.org/statistical-... To celebrate, we've just released fect v2.0.5 on CRAN & Github 🎉 1266
Zikai Li @tzkli.bsky.social · 18/07/2025Did the Biden administration's targeted industrial policies help lift the Democratic Party in "left-behind" America? Well, no, and it might've shifted the targeted areas further away from the party, at least in the case of one place-based green subsidy. New working paper 🧵 1/9 13812
Reposted by Zikai LiAnton Strezhnev @astrezh.bsky.social · 11/07/2025New working paper! - zikai.li and I look at the problem of assessing pre-trends using one of the "new" DiD methods - fixed effects regression imputation. tl;dr - don't use the same regression you used to impute post-treatment to also impute pre-treatment. osf.io/preprints/so... (1/14) 35716