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Table 2 Zivot-Andrews unit root test outcomes.

From: The impact of financial development on renewable energy consumption: new insights from Ghana

Series

Level I(0)

Break year

First difference I(1)

Break year

lnREC

−3.822 (3)

2015

−5.373 (2)a

2014

lnFD

−4.460 (0)

2012

−6.498 (1)a

2011

lnEG

−4.250 (1)

2010

−5.026 (0)b

2014

lnCPI

−3.671 (2)

2014

−5.987(1)a

2000

  1. The Zivot-Andrews unit root test null hypothesis is that the series has a unit root with a structural break in the intercept. a and b demonstrate rejection of the null hypothesis at significance levels of 1 and 5%, respectively