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Table 9 Frequency-domain causality test

From: Revisiting the nexus between fiscal decentralization and CO2 emissions in South Africa: fresh policy insights

Direction of causality

Long-term

Medium-term

Short-term

\({\upomega }_{\mathrm{i}=0.05}\)

\({\upomega }_{\mathrm{i}=1.50}\)

\({\upomega }_{\mathrm{i}=2.50}\)

InSE → InCO2

 < 8.31 > 

 < 8.50 > 

 < 9.96 > 

(0.02)**

(0.00)***

(0.00)***

InTE → InCO2

 < 4.89 > 

 < 6.49 > 

 < 6.93 > 

(0.07)*

(0.03)**

(0.04)**

InOPEN → InCO2

 < 8.94 > 

 < 8.73 > 

 < 7.28 > 

(0.00)***

(0.00)***

(0.01)**

InEC → InCO2

 < 5.12 > 

 < 6.49 > 

 < 6.73 > 

(0.08)*

(0.04)**

(0.03)**

InFDI → InCO2

 < 8.20 > 

 < 8.08 > 

 < 8.62 > 

(0.01)**

(0.03)**

(0.00)***

InTECH → InCO2

 < 4.84 > 

 < 5.14 > 

 < 7.83 > 

(0.06)*

(0.04)**

(0.02)**

InFISD → InCO2

 < 4.20 > 

 < 6.71 > 

 < 6.01 > 

(0.06)*

(0.05)**

(0.02)**

InIGDP → InCO2

 < 5.46 > 

 < 8.82 > 

 < 8.89 > 

(0.07)*

(0.00)**

(0.00)**

  1. *, ** and *** denote statistical significance at 10%, 5% and 1% levels, respectively
  2. Source Authors’ calculations