An empirical analysis of African trade blocs effects on the global economy: new evidence from the gravity model

Future Business Journal

Table 5 The long run result. Dependent variable: Export \(_{ijt}\)

Variable	Coefficient	Std. Error	t-statistics	Prob
\(GDP_{it}\)	− 0.3253	0.0809	− 4.0202	0.00***
\(GDP_{jt}\)	1.0831	0.0672	16.1163	0.00***
Tariff	0.0100	0.0044	2.2755	0.03**
COMESA	0.2280	0.0418	5.4497	0.00***
EAC	0.0986	0.0367	2.6847	0.01**
ECCAS	− 0.0243	0.0455	− 0.5360	0.59
ECOWAS	0.0805	0.0297	2.7106	0.01**
SACU	− 0.0012	0.0037	− 0.3217	0.75
SADC	0.0551	0.0169	3.2543	0.00***
language	0.0090	0.0140	0.8426	0.53
landlock	− 0.0022	0.0145	− 0.1519	0.88
Multi_member	0.0117	0.0182	0.6448	0.82
constant	− 13.6345	1.0009	− 13.6222	0.00***
R− squared	0.99	Durbin Watson Stat	1.86
Standard error	0.03
Sum of squared residual	0.03