Figure 4.

Physical and mental quality of life (SF-36). Graph shows the comparison between the calculated and transformed total score of mental and physical components of health-related quality of life and its sub-scores before and after the bilateral anodal tDCS stimulation. * Indicates significant difference at P<0.05, and ^# indicates difference is not significant at P<0.05. After data entry, items and scales were scored in 3 steps: 1) item recoding, for the items that require recoding; 2) computing scale scores by summing across items in the same scale (raw scale scores); and then 3) transforming raw scale scores to a 0–100 scale (transformed scale scores).