	N	Mean	SD	t value	p value
Pre VAS	20	5.25	0.91	18.42	0.0001
Post VAS	20	1.5	0.83	18.42	0.0001
Pre ODI	20	29.3	0.75	11.28	0.0001
Post ODI	20	15	3.81	11.28	0.0001