Table 1.
Demographic data for the control and experimental groups.
| Group (case number) | BLT (N = 22) | dRL (N = 21) | ||
|---|---|---|---|---|
| Variable | Mean ±SD or No. (%) | t / X 2 | p -value | |
| Age | 47.09 ± 15.03 | 42.76 ± 14.30 | −0.97 | 0.34 |
| Female sex | 18 (81.82%) | 17 (80.95%) | 0.01 | 1.00 |
| Education years | 13.27 ± 4.21 | 14.19 ± 3.53 | 0.77 | 0.44 |
| Right Hand | 21 (95.45%) | 19 (90.48%) | 0.41 | 0.52 |
| Anxiety disorders | 10 (45.45%) | 5 (23.81) | 2.22 | 0.14 |
| HAMD-24 | ||||
| Baseline | 26.32 ± 5.96 | 24.90 ± 8.48 | −0.64 | 0.52 |
| End | 17.50 ± 8.52 | 17.19 ± 10.04 | −0.11 | 0.91 |
| Difference | 8.82 ± 6.05 | 7.71 ± 10.62 | −0.42 | 0.68 |
BLT, bright light therapy; dRL, dim red light; SD, standard deviation; HAMD, Hamilton Depression Rating Scale. t/X2 means the results of t test or Chi-square test.