Results of panel cointegration test
| ICT mobile | ICT internet | ICT telephone | ||||
|---|---|---|---|---|---|---|
| Stat | Prob | Stat | Prob | Stat | Prob | |
| High-income countries | ||||||
| Panel v-statistic | −2.847 | 0.997 | −1.981 | 0.976 | −1.908 | 0.971 |
| Panel rho-statistic | 3.922 | 1,000 | 3.508 | 0.999 | 4.313 | 1,000 |
| Panel PP-statistic | −5.795 | 0.000*** | −5.447 | 0.000*** | −2.490 | 0.000*** |
| Panel ADF-statistic | −6.566 | 0.000*** | −6.037 | 0.000*** | −5.150 | 0.000*** |
| Group rho-statistic | 5.632 | 1,000 | 5.337 | 1,000 | 5.287 | 1,000 |
| Group PP-statistic | −1.066 | 0.000*** | −8.676 | 0.000*** | −8.279 | 0.000*** |
| Group ADF-statistic | −8.595 | 0.000*** | −9.340 | 0.000*** | −8.205 | 0.000*** |
| Middle-income countries | ||||||
| Panel v-statistic | 1.552 | 0.000*** | 1.145 | 0.000*** | 3.851 | 0.000*** |
| Panel rho-statistic | 5.207 | 1,000 | 4.325 | 1,000 | 5.622 | 1,000 |
| Panel PP-statistic | −1.134 | 0.128 | −3.997 | 0.000*** | 0.845 | 0.801 |
| Panel ADF-statistic | −6.461 | 0.000*** | −3.748 | 0.000*** | −3.740 | 0.000*** |
| Group rho-statistic | 5.671 | 1,000 | 5.438 | 1,000 | 6.364 | 1,000 |
| Group PP-statistic | −3.573 | 0.000*** | −4.063 | 0.000*** | −2.131 | 0.000*** |
| Group ADF-statistic | −5.474 | 0.000*** | −3.829 | 0.000*** | −3.212 | 0.000*** |
| Inferences | Cointegrated | Cointegrated | Cointegrated | |||
| ICT mobile | ICT internet | ICT telephone | ||||
|---|---|---|---|---|---|---|
| Stat | Prob | Stat | Prob | Stat | Prob | |
| Panel | −2.847 | 0.997 | −1.981 | 0.976 | −1.908 | 0.971 |
| Panel rho-statistic | 3.922 | 1,000 | 3.508 | 0.999 | 4.313 | 1,000 |
| Panel PP-statistic | −5.795 | 0.000*** | −5.447 | 0.000*** | −2.490 | 0.000*** |
| Panel ADF-statistic | −6.566 | 0.000*** | −6.037 | 0.000*** | −5.150 | 0.000*** |
| Group rho-statistic | 5.632 | 1,000 | 5.337 | 1,000 | 5.287 | 1,000 |
| Group PP-statistic | −1.066 | 0.000*** | −8.676 | 0.000*** | −8.279 | 0.000*** |
| Group ADF-statistic | −8.595 | 0.000*** | −9.340 | 0.000*** | −8.205 | 0.000*** |
| Panel | 1.552 | 0.000*** | 1.145 | 0.000*** | 3.851 | 0.000*** |
| Panel rho-statistic | 5.207 | 1,000 | 4.325 | 1,000 | 5.622 | 1,000 |
| Panel PP-statistic | −1.134 | 0.128 | −3.997 | 0.000*** | 0.845 | 0.801 |
| Panel ADF-statistic | −6.461 | 0.000*** | −3.748 | 0.000*** | −3.740 | 0.000*** |
| Group rho-statistic | 5.671 | 1,000 | 5.438 | 1,000 | 6.364 | 1,000 |
| Group PP-statistic | −3.573 | 0.000*** | −4.063 | 0.000*** | −2.131 | 0.000*** |
| Group ADF-statistic | −5.474 | 0.000*** | −3.829 | 0.000*** | −3.212 | 0.000*** |
| Inferences | Cointegrated | Cointegrated | Cointegrated | |||
Note(s): ***p < 0.01