the same time. The core idea is to track outcome paths in terms of stages rather than time, where a stage of a regional … stages where a stage-leading region provides the no-policy counterfactual path for non-leading regions that are subject to … applications, and show that it captures heterogeneous policy effects across stages. …

the same time. The core idea is to track outcome paths in terms of stages rather than time, where a stage of a regional … stages where a stage-leading region provides the no-policy counterfactual path for non-leading regions that are subject to … applications, and show that it captures heterogeneous policy effects across stages. …

the same time. The core idea is to track outcome paths in terms of stages rather than time, where a stage of a regional … stages where a stage-leading region provides the no-policy counterfactual path for non-leading regions that are subject to … applications, and show that it captures heterogeneous policy effects across stages. …

the same time. The core idea is to track outcome paths in terms of stages rather than time, where a stage of a regional … stages where a stage-leading region provides the no-policy counterfactual path for non-leading regions that are subject to … applications, and show that it captures heterogeneous policy effects across stages. …

approach is the insight that epidemic dynamics are best tracked over stages, rather than over time. We use a normalization … the stage of the epidemic at the time of policy implementation. This variation delivers clean identification of the policy … policy intervention. Its effectiveness evolves with the epidemic and is larger when implemented at earlier stages. …

approach is the insight that epidemic dynamics are best tracked over stages, rather than over time. We use a normalization … the stage of the epidemic at the time of policy implementation. This variation delivers clean identification of the policy … policy intervention. Its effectiveness evolves with the epidemic and is larger when implemented at earlier stages. …

approach is the insight that epidemic dynamics are best tracked over stages, rather than over time. We use a normalization … the stage of the epidemic at the time of policy implementation. This variation delivers clean identification of the policy … policy intervention. Its effectiveness evolves with the epidemic and is larger when implemented at earlier stages. …

approach is the insight that epidemic dynamics are best tracked over stages, rather than over time. We use a normalization … the stage of the epidemic at the time of policy implementation. This variation delivers clean identification of the policy … policy intervention. Its effectiveness evolves with the epidemic and is larger when implemented at earlier stages. …