F test of the difference between groups

Null hypothesis: Coefficients are the same between the regression on two groups of countries.

Cross section regression (table4a) panel regression(table4b)

Equations

compared with (1)vs(4) (2)vs(5) (3)vs(6) (1)vs(4) (2)vs(5) (3)vs(6)

F value 3.56** 1.16 5.29** 2.10* 2.28* 1.93*

prob>F 0.0390 0.3714 0.0297 0.0839 0.0630 0.0699

and i attach table 4a and 4b. Hoping everyone help me.