| t statistic | Test critical values | prob | prob |
difflnP65 | −6.9602 | −3.6220 | 0.0000 | 0.9780 |
difflnh | −5.9881 | −3.0049 | 0.0001 | 0.5771 |
difflnGDP | −0.4332 | −3.6584 | 0.0139 | 0.9252 |