Table 4.
Number (percentage) of participants with clinically meaningful improvement based on fatigue assessments.
| Outcome | T0-T1 a | T0-T2 a | T0-T3 a | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. (%) | No. (%) | No. (%) | |||||||||||
| BWL | DWL | p b | OR c | BWL | DWL | p b | OR c | BWL | DWL | p b | OR c | ||
| VAS fatigue | |||||||||||||
| Improved | 34 (42) | 41 (55) | 0.11 | 0.60 | 25 (35) | 37 (52) | 0.04 | 0.50 | 24 (33) | 27 (39) | 0.48 | 0.78 | |
| Not improved | 47 (58) | 34 (45) | 46 (65) | 34 (48) | 49 (67) | 43 (61) | |||||||
| n | 81 | 75 | 71 | 71 | 73 | 70 | |||||||
| MFI general fatigue | |||||||||||||
| Improved | 49 (60) | 47 (63) | 0.71 | 0.89 | 35 (49) | 37 (52) | 0.68 | 0.87 | 36 (49) | 40 (57) | 0.31 | 0.71 | |
| Not improved | 33 (40) | 28 (37) | 37 (51) | 34 (48) | 38 (51) | 30 (43) | |||||||
| n | 82 | 75 | 72 | 71 | 74 | 70 | |||||||
| WSAS | |||||||||||||
| Improved | 33 (40) | 26 (35) | 0.47 | 1.27 | 31 (43) | 27 (39) | 0.59 | 1.20 | 31 (42) | 29 (41) | 0.96 | 1.02 | |
| Not improved | 49 (60) | 49 (65) | 41 (57) | 43 (61) | 43 (58) | 41 (59) | |||||||
| n | 82 | 75 | 72 | 70 | 74 | 70 | |||||||
Note: shading in the table represents the distinction between variables. Abbreviations: MFI, Multidimensional Fatigue Inventory; OR, odds ratio; VAS, visual analogue scale; WSAS, Work and Social Adjustment Scale. a T0, baseline; T1, post-intervention; T2, 3 months after light therapy; T3, 9 months after light therapy. b p value of the Pearson chi-square test. c Odds ratios of 1.5 were considered small, 2.0 as moderate, and 3.0 as large.