Table 6.

Panel unit root tests by allowing cross-sectional dependence (Hadri 2000; Breitung and Das 2005)

Level	z-Statistic	P value	Difference	z-Statistic	P value
CO2_PC	58.1400	0.0000	CO2_PC	− 3.3115	0.9995
GDP_PC	78.6599	0.0000	GDP_PC	− 1.9466	0.9742
GDP2_PC	75.5128	0.0000	GDP2_PC	− 0.5807	0.7193
Electricity_Fossil	34.0356	0.0000	Electricity_Fossil	− 4.7830	1.0000
Gov_Health_Expend	49.9433	0.0000	Gov_Health_Expend	− 3.2450	0.9994
Priv_Health_Expend	42.7222	0.0000	Priv_Health_Expend	− 4.2588	1.0000