Table 5.
Summary of Pain Measures and Differences in Mean Changes
| Author | AD | Mean diff | Mean diff. var | #(L) | (L) Pre SM | (L) Pre SD | (L) Post SM | (L) Post SD | #(P) | (P) Pre SM | (P) Pre SD | (P) Post SM | (P) Post SD |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Meireles32 | X | −7.6 | 34.64 | 41 | 60.8 | 18.7 | 42 | 25 | 41 | 58.5 | 17.6 | 32.1 | 28.2 |
| Basford33 | X | - | - | 47 | 53 | - | - | - | 34 | 48 | - | - | - |
| Brosseau34 | X | - | - | 42 | 56.9 | 18.4 | - | - | 46 | 49.4 | 22.4 | - | - |
| Stelian for 830nm35 | O | 40 | 67.77 | 18 | 71.6 | 22.2 | 32.2 | 26.2 | 17 | 62.3 | 24.1 | 62.9 | 22.2 |
| Stelian for 633nm35 | O | 32.6 | 66.16 | 15 | 65.3 | 24.7 | 33.3 | 23.8 | 17 | 62.3 | 24.1 | 62.9 | 22.2 |
| Burow36 | X | 19 | - | 14 | 82 | - | 61 | - | 15 | 71 | - | 69 | - |
| Gur at 3J37 | O | 13 | 10.53 | 30 | 73.2 | 23.7 | 35.8 | 11.2 | 30 | 67.4 | 17.3 | 43 | 13.8 |
| Gur at 2J37 | O | 12 | 8.81 | 30 | 74.4 | 13.8 | 38 | 8.6 | 30 | 67.4 | 17.3 | 43 | 13.8 |
| Tascioglu at 3J38 | X | −1.04 | 25.69 | 20 | 68 | 15.45 | 64.96 | 13.1 | 20 | 63.88 | 16.07 | 59.8 | 18.5 |
| Tascioglu at 1.5J38 | X | 1.36 | 28.97 | 20 | 65.72 | 18.68 | 60.28 | 15.4 | 20 | 63.88 | 16.07 | 59.8 | 18.5 |
| Hegedus39 | O | 25.5 | - | 18 | 57.5 | - | 17.1 | - | 9 | 56.2 | - | 41.3 | - |
| Kulekcioglu41 | X | 5 | 27.36 | 20 | 42.8 | 27 | 10.5 | 18.5 | 15 | 35.3 | 29 | 8 | 9.4 |
| Venancio42 | X | 11.4 | 146.98 | 15 | 82.7 | 17.9 | 40.7 | 33.5 | 15 | 77.3 | 19.1 | 46.7 | 32.9 |
| Cetiner43 | O | 43.4 | 41 | 24 | 75.6 | 14.6 | 22.5 | 20.5 | 15 | 65.7 | 19.1 | 56 | 17.6 |
| Emshoff44 | X | -2 | 20.83 | 26 | 38.2 | 7.6 | 12.3 | 16.1 | 26 | 39.7 | 12.2 | 11.8 | 16.8 |
| Santos45 | O | 14.8 | 42.25 | 25 | 51.4 | 21.1 | 29 | 17 | 25 | 54 | 23.7 | 46.4 | 27.7 |
| Bingol50 | X | 2.4 | - | 20 | 61 | 17.7 | 56.5 | - | 20 | 61.7 | 16.4 | 59.6 | - |
| Stergioulas51 | O | 24.13 | 3.02 | 31 | 80.55 | 8.82 | 22.54 | 6.02 | 32 | 73.66 | 8.74 | 39.78 | 7.65 |
| Ozdemir40 | O | 48 | 8.83 | 30 | 77 | 13 | 24 | 13 | 30 | 73 | 14.3 | 68 | 9.8 |
| Chow52 | O | 30 | 16.205 | 45 | - | - | - | - | 45 | - | - | - | - |
| Klein46 | X | 1.33 | 60.44 | 10 | 40 | 16 | 22.6 | 18.6 | 10 | 44 | 14.6 | 28 | 16 |
| Soriano47 | O | - | - | 38 | - | - | - | - | 33 | - | - | - | - |
| Basford48 | O | 13.5 | 35.67 | 30 | 35.2 | 29 | 17.1 | 15.8 | 29 | 37.4 | 36 | 32.8 | 28.5 |
| Djavid2 | O | 6 | 39.25 | 19 | 62 | 16 | 46 | 17 | 18 | 63 | 20 | 53 | 21 |
| Ay at acute49 | X | −4 | 20.49 | 20 | 67 | 21.5 | 27 | 14.9 | 20 | 61.5 | 23.9 | 20 | 13.7 |
| Ay at chronic49 | X | −6 | 20.74 | 20 | 60 | 22.9 | 26.5 | 14.2 | 20 | 66 | 22.5 | 26.5 | 14.6 |
AD, author's decision on effectiveness (O, effective, X, ineffective); SM, sample mean; SD, standard deviation; −, no description or failed to infer. This table lists pain measure differences between low-level laser therapy (LLLT) group (L) and placebo group (P). For each group, the number of patients in the group and outcomes of pretreatment in the group (A) and post-treatment in the group (B) are described. The mean changes between pretreatment and post-treatment within each group (C=B-A) are used for calculating the mean difference between LLLT group and placebo group(CLLLT – CPlacebo).