What happened to the land? Long-run agricultural plot panel surveys John LoeserFlorence Kondylis March 16, 2026 This page in: English © 2026 World Bank Group,

https://blogs.worldbank.org/en/impactevaluations/what-happened-to-the-land--long-run-agricultural-plot-panel-surv The impacts of policies can take many years to materialize, yet surveys of policy beneficiaries often stop just a few years after a baseline survey. Such short-run data collection can miss important impacts: a recent experimental evaluation found lower child mortality when parents received a deworming intervention as children. To capture such slow-to-emerge impacts, a growing number of experimental and quasi-experimental evaluations now collect follow-up data on household beneficiaries years and decades after implementation was completed. © 2026 World Bank Group,