| Severity | Pre -Average | Post - Average | p-value | Effect Size | Cohen's d | |
|---|---|---|---|---|---|---|
| Mild | 33.9 ± 7.7 | 23.2 ± 14.0 | <0.01 | 0.445 | 0.993 | Large |
| Moderate | 52.4 ± 4.6 | 34.0 ± 17.5 | < 0.001 | 0.583 | 1.486 | Large |
| Severe | 68.1 ± 3.6 | 37.3 ± 14.5 | < 0.001 | 0.833 | 3.01 | Large |
| Very Severe | 88.3 ± 10.4 | 49.7 ± 25.9 | < 0.001 | 0.704 | 1.98 | Large |