Working Papers
Karim, S., & Webb, M. D. (2024). Good Controls Gone Bad: Difference-in-Differences with Covariates. arXiv preprint arXiv:2412.14447. [Here] (JOB MARKET PAPER)
Karim, S., Webb, M. D., Austin, N., & Strumpf, E. (2024). Difference-in-differences with Unpoolable Data. arXiv preprint arXiv:2403.15910. [Here] (submitted)
Chen, S., Gangji, A., Karim, S., McCanny, A., & Webb, M. D. (2024). The Many Misspellings of Albuquerque: A Comment on 'Sorting or Steering: The Effects of Housing Discrimination on Neighborhood Choice' (No. 108). I4R Discussion Paper Series. (second round R&R at Journal of Political Economy) [Here]
Work in Progress
MacKinnon, J. G., Nielsen, M. Ø., Webb, M. D., Karim, S.R. Improving Inferences for Callaway and Sant’Anna DiD Using the Cluster Jackknife. [Here]
Karim, S., Webb, M. D., Austin, N., & Strumpf, E. Which Policy Works and Where? Estimation and Inference for State Level Treatment Effects Using Difference-in-differences. [Here]
Publications (Pre-doctoral Studies)
Chowdhury, M. I., & Karim, S. R. (2020). Financial innovations and its impact on money demand in Bangladesh: an error correction model (ECM) approach. International Review of Business Research Papers, 16(1), 34-54.
Haque, S., Amin, S. B., & Karim, S. R. (2018). Disaster risk and impact of urbanization of megacities in Bangladesh: Evidence from Dhaka and Chittagong. Journal of Accounting, Finance and Economics, 8(3), 35-57.
Media Mentions
DID digest - Parallel Trends… Conditionally: Covariates, Violations, and More Robust DiD Methods by Beatriz Gietner (August 2025) [Here]
Papers discussed:
Karim, S., & Webb, M. D. (2024). Good Controls Gone Bad: Difference-in-Differences with Covariates. arXiv preprint arXiv:2412.14447. [Here]
DID digest - DiD+: Handling Data Constraints, Timing Issues and TWFE Limitations by Beatriz Gietner (August 2025) [Here]
Papers discussed:
Karim, S., Webb, M. D., Austin, N., & Strumpf, E. (2024). Difference-in-differences with unpoolable data. arXiv preprint arXiv:2403.15910. [Here]
Meta Papers
Brodeur, A., Mikola, D., & Cook, N. (2024). Mass reproducibility and replicability: A new hope (No. 16912). IZA Discussion Papers. (R&R at Nature) [Here]
Brodeur, A., et al. (2025). Comparing Human-Only, AI-Assisted, and AI-Led Teams on Assessing Research Reproducibility in Quantitative Social Science (No. 195). I4R Discussion Paper Series. [Here ]