Table 3. Periodic changes in VAS scores at rest.

Group	The mean differences	Differences in standard deviation	p
Differences before treatment and at week 3 after treatment
Platelet-rich plasma injection	3,63	0,999
Corticosteroid injection	3,66	0,758	0,591
Physical therapy	3,86	0,776
Differences at week 3 and week 8 after treatment
Platelet-rich plasma injection	0,46	0,507
Corticosteroid injection	0,23	0,430	0,081
Physical therapy	0,23	0,430
Differences before treatment and at week 8 after treatment
Platelet-rich plasma injection	4,1	1,093
Corticosteroid injection	3,9	0,758	0,505
Physical therapy	4,1	0,803
VAS: Visual analog scale.