Group | First visit | After 2 week | After 4 week | After 6 week | |
Group A | Mean ± SD | 16.000 ± 0.00 | 14.66 ± 1.632 | 10.91 ± 3.322 | 6.458 ± 5.458 |
| P* | - | 0.001 | 0.000 | 0.000 |
Group B | Mean ± SD | 16.00 ± 0.000 | 15.00 ± 0.000 | 13.35 ± 1.886 | 8.208 ± 3.787 |
| P* | - | - | 0.001 | 0.000 |
Group C | Mean ± SD | 16.00 ± 0.000 | 11.740 ± 2.395 | 6.481 ± 3.501 | 2.074 ± 2.302 |
| P* | - | 0.000 | 0.000 | 0.000 |