variable | Test type | ADF test value | The critical value at the 1% level | The critical value at the 5% level | The critical value at the 10% level | conclusion |
DLnSZ | (C, 0, 2) | −11.047 | −3.550 | −2.914 | −2.595 | stationary |
DLnSC | (0, 0, 3) | −3.363 | −2.607 | −1.947 | −1.613 | stationary |
DLnGDP | (C, 0, 1) | −8.529 | −3.548 | −2.913 | −2.594 | stationary |
DLnCPI | (C, 0, 2) | −4.596 | −3.550 | −2.914 | −2.595 | stationary |