Table 7

Unit root test results

VariablesFisher-typeIm-Pesaran-Shin
CTVi,t−6.3023***−5.7139***
MSi,t−3.8969***−3.3971***
RPRi,t−4.0879***−3.7462***
TPRi,t−8.5950***−7.7658***
CPIt
CCSIt
GDPt
BADLRi,t−5.1466***−4.6840***
OEi,t−8.0212***−7.3610***
PCSi,t−6.1830***−5.5700***
CCRi,t−4.2495***−3.8568***

Note(s): This table presents the panel unit root test results. The Fisher-type and Im-Pesaran-Shin methods were adopted for this analysis. The Fisher-type null hypothesis states that “all panels contain a unit root,” while the alternative hypothesis states that “at least one panel is stationary.” Thus, inverse normal static values were used for the Fisher-type model. The Im-Pesaran-Shin null hypothesis states that “all panels contain a unit root,” while the alternative hypothesis states that “some panels are stationary.” CPi,t, CCSi,t and GDPt were excluded from the unit root test since they are exogenous variables and do not differ by individuals. ***, ** and * indicate significance at the 1%, 5% and 10% levels, respectively

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