Table 7.
Wald tests for differences between coefficients.
| OLS |
OLS |
ANCOVA |
ANCOVA |
|
|---|---|---|---|---|
| (1) | (2) | (3) | (4) | |
| Panel A: rice area (ha) | ||||
| Difference btw T2 & T1 | 0.1038 | 0.1091 | 0.1032 | 0.1062 |
| Difference btw T3 & T2 | 0.0031∗∗∗ | 0.0032∗∗∗ | 0.0026∗∗∗ | 0.0027∗∗∗ |
| Difference btw T3 & T1 | 1.000 | 1.000 | 1.0000 | 1.0000 |
| All pairwise comparisons | 0.0029∗∗∗ | 0.0036∗∗∗ | 0.0026∗∗∗ | 0.0031∗∗∗ |
| Panel B: yield (kg/ha) | ||||
| Difference btw T2 & T1 | 0.9821 | 1.0000 | 1.0000 | 1.0000 |
| Difference btw T3 & T2 | 1.0000 | 1.0000 | 1.0000 | 1.0000 |
| Difference btw T3 & T1 | 1.0000 | 1.0000 | 1.0000 | 1.0000 |
| All pairwise comparisons | 0.5109 | 0.7503 | 0.5310 | 0.7759 |
| Panel C: market participation (%) | ||||
| Difference btw T2 & T1 | 0.0000∗∗∗ | 0.0001∗∗∗ | 0.0000∗∗∗ | 0.0001∗∗∗ |
| Difference btw T3 & T2 | 0.0000∗∗∗ | 0.0000∗∗∗ | 0.0000∗∗∗ | 0.0000∗∗∗ |
| Difference btw T3 & T1 | 0.0000∗∗∗ | 0.0000∗∗∗ | 0.0000∗∗∗ | 0.0000∗∗∗ |
| All pairwise comparisons | 0.0000∗∗∗ | 0.0000∗∗∗ | 0.0000∗∗∗ | 0.0000∗∗∗ |
| Panel D: income per capita (US$) | ||||
| Difference btw T2 & T1 | 0.8798 | 1.0000 | 1.0000 | 1.0000 |
| Difference btw T3 & T2 | 0.1661 | 0.1364 | 0.1799 | 0.1372 |
| Difference btw T3 & T1 | 1.0000 | 0.2490 | 0.5347 | 0.1581 |
| All pairwise comparisons | 0.1541 | 0.0956∗ | 0.1596 | 0.0817∗ |
Note: Each cell contains the Bonferroni-adjusted p-values for Wald tests between coefficient estimates reported in Table 6. Significance of the test is reported as ∗∗∗, ∗∗, ∗.