Regional trade agreements and agricultural trade: An analysis of Zimbabwe’s agricultural trade flows

Figures & data

Figure 1. Conceptual framework.

Table 1. Hausman test for random effects and fixed effects

Model	Chibar2 (5) value	P value
Random effects	11.18**	0.048

**p < 0.05; H₀: Random Effects model is preferred.

Table 2. Modified wald test for heteroscedasticity

Model	Chi2 (11) value	P value
Fixed effects	326.92***	0.0000

***p < 0.01; H₀: Homoscedastic

Table 3. Fixed effects estimates

Variable	Coefficient	t-statistic	P value
EPA	1.406***	3.79	0.004
	(0.371)
SADC-FTA	1.681***	4.94	0.001
	(0.340)
ln GDPit	−1.385*	−2.21	0.052
	(0.627)
ln GDPjt	−0.008	−0.37	0.716
	(0.021)
ln Exchangerateij	−0.040***	−3.26	0.009
	(0.012)
ln Populationit	3.754	1.32	0.217
	(2.851)
ln Populationjt	0.718	1.65	0.129
	(0.434)
Constant	29.767**	2.88	0.016
	(10.331)
Number of observations	198

Note: Robust standard errors in parentheses. ***p < 0.01, **p < 0.05, *p < 0.1