Non-parametric regression results for Uganda with district dummies
| Variable | Av. Marginal effect | z-statistic | p-value |
|---|---|---|---|
| Head rice ratio | 0.02 (0.01) | 2.68 | 0.007 |
| Length-width ratio | 0.49 (0.30) | 1.62 | 0.105 |
| Chalkiness | −0.03 (0.02) | −2.10 | 0.036 |
| Amylose content | 0.04 (0.11) | 0.33 | 0.743 |
| Peak viscosity | −0.0002 (0.0001) | −1.27 | 0.203 |
| Impurities | 0.58 (1.96) | 0.29 | 0.769 |
| Soroti | −0.0004 (0.28) | 0.00 | 0.999 |
| Hoima | −0.19 (0.27) | −0.69 | 0.492 |
| Butaleja | −0.85 (0.28) | −3.00 | 0.003 |
| Mbale | −0.51 (0.29) | −1.77 | 0.077 |
| Lira | 0.03 (0.29) | 0.10 | 0.924 |
| Gulu | −0.10 (0.30) | −0.32 | 0.748 |
| Arua | 0.66 (0.34) | 1.94 | 0.052 |
| Iganga | −0.20 (0.32) | −0.62 | 0.534 |
| Amuru | −0.15 (0.31) | −0.47 | 0.639 |
| Kasese | −0.31 (0.28) | −1.12 | 0.262 |
| Rubirizi | 0.45 (0.34) | 1.30 | 0.193 |
| Variable | Av. Marginal effect | ||
|---|---|---|---|
| Head rice ratio | 0.02 (0.01) | 2.68 | 0.007 |
| Length-width ratio | 0.49 (0.30) | 1.62 | 0.105 |
| Chalkiness | −0.03 (0.02) | −2.10 | 0.036 |
| Amylose content | 0.04 (0.11) | 0.33 | 0.743 |
| Peak viscosity | −0.0002 (0.0001) | −1.27 | 0.203 |
| Impurities | 0.58 (1.96) | 0.29 | 0.769 |
| Soroti | −0.0004 (0.28) | 0.00 | 0.999 |
| Hoima | −0.19 (0.27) | −0.69 | 0.492 |
| Butaleja | −0.85 (0.28) | −3.00 | 0.003 |
| Mbale | −0.51 (0.29) | −1.77 | 0.077 |
| Lira | 0.03 (0.29) | 0.10 | 0.924 |
| Gulu | −0.10 (0.30) | −0.32 | 0.748 |
| Arua | 0.66 (0.34) | 1.94 | 0.052 |
| Iganga | −0.20 (0.32) | −0.62 | 0.534 |
| Amuru | −0.15 (0.31) | −0.47 | 0.639 |
| Kasese | −0.31 (0.28) | −1.12 | 0.262 |
| Rubirizi | 0.45 (0.34) | 1.30 | 0.193 |
Note(s): Dependent variable is price in constant international dollars. Figures in parentheses are robust standard errors. N = 319. The reference district is Kampala. The estimated average marginal effects are averages of derivatives for continuous variables and averages of contrasts (differences) in the case of dummy variables (StataCorp, 2019)
Source(s): Authors work