Table 2. the difference between visits regarding pain scale and flexion degree in grade III osteoarthritis patients.
Z score and P-value calculated using Wilcoxon signed-rank tests between the visit and the one before it.
* Statistically significant with P-value ≤ 0.05
| Grade III | Initial pain | 1st follow up (3 months) | 2nd follow up (6 months) | 3rd follow up (9 months) | Initial flexion | 1st follow up (3 months) | 2nd follow up (6 months) | 3rd follow up (9 months) | |
| 2 Visits | Mean | 7 | 5.85 | - | - | 110.31o | 113.23o | - | - |
| Median | 6 | 6 | - | - | 110o | 110o | - | - | |
| Z score | - | -2.712 | - | - | - | -2.012 | - | - | |
| P-value | - | 0.007* | - | - | - | 0.044* | - | - | |
| 3 Visits | Mean | 6.67 | 4.08 | 4.25 | - | 114.33o | 115.33o | 121.42o | - |
| Median | 6 | 4 | 4 | - | 112.50o | 117o | 121o | - | |
| Z score | - | -6.1 | -0.167 | - | - | -1.198 | -4.095 | - | |
| P-value | - | 0.000* | 0.867 | - | - | 0.231 | 0.000* | - | |
| 4 Visits | Mean | 7.67 | 6.33 | 5.33 | 3.33 | 123.33o | 124.33o | 124o | 127o |
| Median | 8 | 6 | 6 | 3 | 130o | 130o | 128o | 130o | |
| Z score | - | -3.176 | -2.585 | -2.585 | - | -2 | -1.149 | -2.585 | |
| P-value | - | 0.001* | 0.01* | 0.01* | - | 0.046* | 0.251 | 0.01* | |