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Comparison of efficacy of all treatments based on Goodman & Baron quantitative grading
| Groups | Mean % of improvement in quantitative score (after 4 sessions) | t | P | Decision |
|---|---|---|---|---|
| CO2 laser | 68.7%±10.5 | |||
| Microneedling | 60.3%±14.5 | 1.662 | 0.106 | Not significant |
| PRP | 31.1%±6.7 | 5.809 | 0.000 | Significant |
