Table 2.
β3 Effects in the DID model.
| Before change | After change | Difference | |
|---|---|---|---|
| Group1 (Treat) |
β0+β1 | β0+β1+β2+β3 | ΔYt = β2+β3 |
| Group2 (Control) |
β0 | β0+β2 | ΔYc = β2 |
| Difference | ΔΔ = β3 |
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