Table 3.

PTED vs. MED (ODI).

Time points	No. of studies	MD (95%CI)	P value
Preoperative	6	4.14 (−4.70 to 12.98)	0.36
1 week PO	2	−4.41 (−7.03 to −1.79)	0.001*
1 month PO	3	0.56 (−4.15 to 5.27)	0.82
6 months PO	3	−1.13 (−3.76 to 1.49)	0.40
1 year PO or last follow-up	6	−0.27 (−1.71 to 1.16)	0.71

PO – postoperatively;

^*indicates significant difference.