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. 2019 Mar 26;14(3):e0209532. doi: 10.1371/journal.pone.0209532

Table 7. Unit root of individual variables (level).

Level
Individual intercept Individual intercept and trend
Variables CR Individual root Hadri CR Individual root Hadri
LLC IPS ADF PP LLC Breitung IPS ADF PP
GDP 8.739 13.65 16.039 17.32 19.797*** 3.537** 6.503 5.835 31.959** 40.602** 15.174***
GDPC -13.66*** -12.975*** 280.248*** 380.343*** 4.285*** -13.69*** -14.14*** -12.784*** 263.21*** 425.104*** 2.308***
CESFC 3.314** 3.172** 49.643** 51.126** 17.197*** 1.202** 6.941 2.330** 60.639** 64.380** 13.552***
CEGFC 3.025** 6.834 18.342 25.46** 16.917*** 4.958 7.018 5.049 41.332** 44.202** 7.476***
CELFC 2.695** 3.300** 59.771** 55.412** 16.591*** -1.041** 2.297** 1.086** 59.143** 36.310** 9.302***
CE -4.601*** -1.436** 74.517** 89.044*** 16.995*** -0.633** -0.7237*** -0.783** 67.931** 83.414*** 11.111***
CEMIC 3.992*** 6.072 26.559** 28.959** 17.839*** 2.607*** 6.2 3.839** 36.388** 39.174** 14.375***
ME 1.475** 2.156** 42.353** 68.413** 18.215*** -1.518** -1.482** -2.352** 81.068** 102.354*** 7.125***
AET -2.149*** -3.04*** 79.523 110.819 11.871*** .717** -5.135*** -1.167*** 61.545 87.606 3.010***
MI 3.707** 5.879 37.712** 52.798** 18.826*** -2.416** 2.854** -2.118** 88.14** 113.464*** 13.400***
AIT -6.969*** -8.674*** 185.301*** 248.052*** 6.569*** -6.696*** -5.215*** -6.628*** 139.403*** 203.930*** 7.207***
CSE 11.033 14.16 3.186 1.533 19.175 2.628** 6.902 5.625 19.432 15.76 14.747***
IGD -5.321*** -6.227*** 147.989*** 202.607*** 2.050** -6.39*** -5.44*** -6.066*** 144.463*** 204.946*** 7.540***
CR -3.471*** -3.471*** 72.654*** 117.598*** 4.397*** -3.677*** -3.956*** -2.407 61.733** 81.987*** 9.117***
IF -2.095*** -2.917*** 96.901*** 113.746*** 11.374*** -6.89*** -3.299*** -4.257*** 107.359*** 127.867*** 127.867***
MIE -3.048** -0.505** 62.802** 60.849** 15.849*** -1.574*** -1.968*** -0.695 60.823 68.363 8.344***
AL -1.654** 3.599** 39.238** 53.892** 14.337*** -0.876** 1.459** 1.960** 38.680** 45.758** 12.985**

Source: Computation by authors. Note: Please see, Table 2 for the variable’s definition

*** specifies the statistically significant at 1% levels.

** specifies the statistically significant at 5% levels.

* specifies the statistically significant at 10% levels.