Adjusted R-squared typically falls from 0.8–0.9 to 0.5–0.6.

Adjusted R-squared rises to roughly 0.8–0.9 from an R-squared around 0.5–0.6 in regressions without geography, while many other determinants remain significant.

Geographical variables explain exactly 100% of growth differences.

All conventional growth determinants become statistically insignificant.