| Variables | Statistics | Stationarity | |
| Level | First difference | ||
| TPIBT | −6.534* | - | I (0) |
| TX_INV | −6.046* | - | I (0) |
| VCI | −6.643* | - | I (0) |
| ICUET | - | −9.603* | I (1) |
| ICUE | −6.367* | - | I (0) |
| ICLE | - | −10.092* | I (1) |
| ICUD | −6.790* | - | I (0) |
| ICCIE | −2.763* | - | I (0) |