Table 3.

Patient-reported outcomes.

Measure	N	Mean (SD) Change Compared With Preoperative	P Value
ODI
2 wk postoperative	32	6.4 (23.2)	0.129
6 wk postoperative	38	−7.7 (20)	0.023
3 mo postoperative	29	−18.3 (17.4)	<0.001
Pain EQ5D
2 wk postoperative	33	−0.4 (1)	0.017
6 wk postoperative	40	−1.0 (1.1)	<0.001
3 mo postoperative	5	−0.8 (0.4)	0.016
VAS EQ5D
2 wk postoperative	33	−2.8 (26.2)	0.541
6 wk postoperative	40	6.6 (15.8)	0.012
3 mo postoperative	5	16.4 (20.2)	0.145
Leg VAS
2 wk postoperative	39	−2.3 (4.1)	<0.001
6 wk postoperative	42	−3.3 (3.6)	<0.001
3 mo postoperative	32	−3.8 (3.4)	<0.001
Back VAS
2 wk postoperative	38	−1.6 (2.5)	<0.001
6 wk postoperative	43	−3.3 (3.1)	<0.001
3 mo postoperative	31	−3.9 (3.2)	<0.001

Abbreviations: ODI, Oswestry Disability Index; VAS, visual analog scale.

Note: Boldface indicates statistically significant findings.