Petterson S, Plancher K, Klyve D, Draper D, Ortiz R. J Pain Res. 2020;13:1277—1287.
Page 1277, Abstract, Results, second sentence, the text “Participants treated with active therapy observed a significant mean pain reduction from baseline of 2.61 points for active (p<0.001), compared to 1.58 points decrease from baseline for placebo (p=0.087), resulting in a 1.03 points significant decrease in the active group over placebo (p=0.003)” should read “Participants treated with active therapy observed a significant mean pain reduction from baseline of 2.61 points for active (p<0.001), compared to 1.58 points decrease from baseline for placebo (p=0.087), resulting in a 1.03 points significant decrease in the active group over placebo (p=0.009)”.
Page 1281, Results, Pain Change from Baseline section, last sentence, the text “While this could indicate a placebo effect, the difference between groups for change from baseline was significant for all 4 weeks assessed (p<0.001 for weeks 1–3, p=0.003 for week 4), showing a more significant change from baseline for the active LICUS group compared to placebo” should read “While this could indicate a placebo effect, the difference between groups for change from baseline was significant for all 4 weeks assessed (p<0.001 for weeks 1–2, p<0.01 for weeks 3-4), showing a more significant change from baseline for the active LICUS group compared to placebo”.
Page 1282, Table 2 is incorrect. The correct table is shown below.
Table 2 Primary Outcomes. The Pain Reported at Baseline and Weekly Averages. Change in Pain from Baseline and Comparison Between Groups Evaluated Using Independent t-tests
| Pain diary data (NRS) | ||||
|---|---|---|---|---|
| Time | Active | Placebo | Between Group Mean 95% CI | P-value |
| Baseline | 5.60 ± 1.58 | 5.44 ± 1.95 | 0.163 (-1.22 to 1.55) | 0.81 |
| Week 1 | 3.54 ± 1.64 | 4.58 ± 2.20 | -1.03 (-1.65 to -0.42) | 0.001 |
| Week 2 | 3.26 ± 1.58 | 4.74 ± 2.39 | -1.48 (-2.12 to -0.84) | <0.001 |
| Week 3 | 3.09 ± 1.54 | 3.92 ± 2.10 | -0.827 (-1.46 to -0.19) | 0.011 |
| Week 4 | 2.98 ± 1.62 | 3.86 ± 2.30 | -0.87 (-1.64 to -0.106) | 0.026 |
| NRS mean change from baseline 95% CI | ||||
| Week 1 | -2.05 ± 1.64 | -0.860 ± 2.21 | -1.20 (-1.81 to -0.579) | <0.001 |
| -2.76 to -1.35 | -2.53 to 0.81 | |||
| p<0.001 | p=0.306 | |||
| Week 2 | -2.34 ± 1.59 | -0.693 ± 2.38 | -1.65 (-2.28 to -1.00) | <0.001 |
| -3.03 to -1.65 | -2.49 to 1.11 | |||
| p<0.001 | p=0.443 | |||
| Week 3 | -2.51 ± 1.55 | -1.52 ± 2.11 | -0.989 (-1.62 to -0.351) | 0.003 |
| -3.18 to -1.83 | -3.14 to 0.110 | |||
| p<0.001 | p=0.07 | |||
| Week 4 | -2.61 ± 1.63 | -1.58 ± 2.30 | -1.03 (-1.80 to -0.264) | 0.009 |
| -3.34 to -1.90 | -3.40 to 0.24 | |||
| p<0.001 | p=0.087 | |||
The authors apologize for these errors and advise they do not affect the results of the paper.