[Retracted] Can European Union (EU) Enlargement Boost Regional Economic Common Growth? Multi-Period Difference-in-Difference (DID) Method

Table 4

Heterogeneity test for EU enlargement.

Variables	(1); Developed	(2); Developing	(3); CEE	(4); South
Membership	0.177	0.034	0.258	0.044
	(3.61)	(0.56)	(3.29)	(0.89)
Eld	0.009	0.009	0.007	0.015
	(2.08)	(1.17)	(1.11)	(5.04)
Tech	−0.060	−0.330	0.137	−0.192
	(−0.38)	(−0.42)	(0.43)	(−1.32)
Gov	−0.003	−0.006	−0.001	−0.008
	(−1.91)	(−0.60)	(−0.29)	(−2.01)
Second	0.016	0.006	0.004	−0.001
	(3.92)	(0.41)	(0.38)	(−0.18)
Urban	−0.012	−0.016	−0.043	0.009
	(−1.59)	(−0.40)	(−2.52)	(0.59)
Constant	9.996	9.376	11.505	8.226
	(12.13)	(3.67)	(7.72)	(7.09)
Observations	418	95	171	190
Year	Yes	Yes	Yes	Yes
Country	Yes	Yes	Yes	Yes

Robust t-statistics in parentheses; , , .