VAS.before	VAS.after	Likert.before	Likert.after	
6	3	2	1	
2	1	2	1	
2	0	3	0	
9	1	3	1	
3	0	2	0	
3	2	2	2	
4	1	2	1	
5	2	3	1	
2	2	2	1	
3	0	2	0	
5	1	3	1	
1	0	1.5	0	
6	4	2	1	
6	1	2	2	
4	4	2	1	
4	1	2	1	
7	6	4	3	
2	1	2	1	
4	3	2	1.5	
8	8	3.5	3