Table 4.
Daily Pain NRS Scores Treatment Group.
| Groups | Sham | PBM 650nm | PBM 810nm | p-value | Pairwise comparisons (Day 1) |
|---|---|---|---|---|---|
| Days | Mean (SD) | Mean (SD) | Mean (SD) | ||
| Day 1 | 4.45 (2.58) | 2.4 (1.50) | 2.8 (1.70) | 0.004 |
 = 0.005, (Sham vs PBM 650 nm) |
 = 0.03, (Sham vs PBM 810 nm) |
|||||
 , (PBM 650 nm vs PBM 810 nm) |
|||||
| Day 2 | 0.9 (2.02) | 0.1 (0.45) | 0.45 (1.36) | 0.22 | – |
| Day 3 | 0.7 (1.84) | 0.1 (0.45) | 0.25 (0.72) | 0.25 | – |
| p-value |  |
 |
 |
– | – |
Values are presented as mean ± standard deviation. One-way ANOVA was used for between-group comparisons. Post hoc pairwise tests with Cohen’s d were used for Day 1. Statistical significance was set at
.
/
: Sham vs PBM 650 nm;
/
: Sham vs PBM 810 nm;
/
: PBM 650 nm vs PBM 810 nm.