Table 1. Gravity model variations (using power distance kernel) and radiation model, ranked for each country based on Deviance Information Criterion (DIC) and percent change (%Δ) from the basic gravity model.
| Rank | Namibia | Kenya | Burkina Faso | Zambia | ||||
|---|---|---|---|---|---|---|---|---|
| Model | DIC (%Δ) | Model | DIC (%Δ) | Model | DIC (%Δ) | Model | DIC (%Δ) | |
| 1 | Reg - Urb. | 3.62E + 06 (41.0) | Reg - Urb. | 2.43E + 08 (30.1) | Reg - Urb. | 1.93E + 05 (27.7) | Reg - Urb. | 2.01E + 06 (16.3) |
| 2 | Urbanicity | 4.56E + 06 (25.6) | Urbanicity | 2.53E + 08 (27.2) | Urbanicity | 2.05E + 05 (23.1) | Regional | 2.08E + 06 (13.4) |
| 3 | Regional | 4.61E + 06 (24.8) | Regional | 3.40E + 08 (2.1) | Regional | 2.52E + 05 (5.7) | Urbanicity | 2.38E + 06 (1.1) |
| 4 | Basic | 6.12E + 06 (0.0) | Basic | 3.48E + 08 (0.0) | Basic | 2.67E + 05 (0.0) | Basic | 2.40E + 06(0.0) |
| 5 | Radiation | 8.68E + 06 (-41.7) | Radiation | 4.26E + 08 (-22.4) | Radiation | 3.39E + 05 (-27.2) | Radiation | 4.3E + 06 (-79.9) |