Table 1.

Likert scale 7-point scoring system: global perceived effect

Score	Description	% Change
7	Very good	≥75% improvement
6	Good	≥50% improvement
5	Fairly good	≥25% improvement
4	Same as before	0 improvement or deterioration
3	Fairly bad	≥25% deterioration
2	Bad	≥50% deterioration
1	Very bad	≥75% deterioration