Table 7 Unit root test.
CIPS | CADF | |||
|---|---|---|---|---|
Variable | Level | 1st diff | level | 1st diff |
GVC | 0.777 | −2.988*** | −0.055 | −3.163*** |
GDP | −2.166 | −2.881*** | −1.095 | −3.629*** |
EM | −0.77 | −3.496*** | −0.93 | −2.798*** |
IQ | −2.164 | −5.066*** | −2.512** | −3.325*** |
DGT | −0.479 | −3.498*** | −0.805 | −2.525** |
NRR | −1.725 | −3.782*** | −2.786*** | −4.066*** |