2 papers
econ.GN2026
High Volume Low Complexity Surgical Hubs in England: Can They Improve Physician Productivity?
Zecharias Anteneh, Adriana Castelli, Peter Sivey +3
Whether organisational separation of elective and emergency care improves physician productivity remains an open question. Most existing evidence relies on cross-sectional comparis…
econ.EM2026
Beyond Parallel Trends in Staggered Difference-in-Differences: Identification under Higher-Order Parallelism
Zecharias Anteneh
In difference-in-differences designs, the parallel trends assumption requires that the outcome gap between treated and control units would have remained flat absent treatment. Pre-…