Table 2. Distribution of Average Change in Different Parameters Between 6 and 12 Months With Respect to Change in Severity of PAH.
| Parameters | N | Status | Mean rank | Mean | Standard deviation | Chi-square | df | P |
|---|---|---|---|---|---|---|---|---|
| SpO2 | 9 | No change: 6 | 4.50 | -0.27 | 0.78 | 0.727 | 2 | 0.695 |
| Improved: 1 | 6.00 | |||||||
| Worsened: 2 | 6.00 | |||||||
| 6MWD | 9 | No change: 6 | 4.50 | -7.54 | 15.39 | 0.807 | 2 | 0.668 |
| Improved: 1 | 5.00 | |||||||
| Worsened: 2 | 6.50 | |||||||
| RA area | 9 | No change: 6 | 5.00 | 0.14 | 0.69 | 0.202 | 2 | 0.904 |
| Improved: 1 | 6.00 | |||||||
| Worsened: 2 | 4.50 | |||||||
| RA pressure | 9 | No change: 6 | 4.50 | -0.90 | 2.21 | 1.125 | 2 | 0.570 |
| Improved: 1 | 6.00 | |||||||
| Worsened: 2 | 6.00 | |||||||
| RV E/A | 9 | No change: 6 | 4.17 | -0.03 | 0.19 | 2.779 | 2 | 0.249 |
| Improved: 1 | 9.00 | |||||||
| Worsened: 2 | 5.50 | |||||||
| RV basal diameter | 9 | No change: 6 | 4.33 | -0.27 | 1.19 | 1.786 | 2 | 0.409 |
| Improved: 1 | 8.00 | |||||||
| Worsened: 2 | 5.50 | |||||||
| RV long diameter | 9 | No change: 6 | 5.67 | 0.22 | 1.50 | 1.786 | 2 | 0.409 |
| Improved: 1 | 2.00 | |||||||
| Worsened: 2 | 4.50 | |||||||
| FAC | 9 | No change: 6 | 4.50 | -2.70 | 2.12 | 5.647 | 2 | 0.059 |
| Improved: 1 | 1.00 | |||||||
| Worsened: 2 | 8.50 | |||||||
| TAPSE | 9 | No change: 6 | 4.67 | -1.45 | 1.86 | 1.810 | 2 | 0.405 |
| Improved: 1 | 3.00 | |||||||
| Worsened: 2 | 7.00 | |||||||
| RIMP | 9 | No change: 6 | 4.00 | -2.80 | 2.17 | 4.421 | 2 | 0.110 |
| Improved: 1 | 4.00 | |||||||
| Worsened: 2 | 8.50 | |||||||
| RVLS | 9 | No change: 6 | 5.50 | 1.33 | 1.56 | 5.695 | 2 | 0.058 |
| Improved: 1 | 9.00 | |||||||
| Worsened: 2 | 1.50 |
The average change in no parameter achieved significance level with change in severity of PAH at 12 months with comparison to 6 months. Out of 21 patients, nine patients yet to reach their 12 months follow-up and three patients expired at 6 months follow-up.