Table 3

Multivariate analysis of outcomes after surgical treatment for lumbar disc herniation.

Variable	Outcome
	Absolute Change Threshold (3.5pt)		Resolution of Radicular Pain		Resolution of Neurological Symptoms
	OR (95% CI)	P	OR (95% CI)	P	OR (95% CI)	P
Age	1.003 (0.966–1.041)	0.866	0.995 (0.961–1.031)	0.793	0.952 (0.910–0.995)	0.030
Osteoporotic disease	-	-	-	-	-	-
Prior spine surgery	0.119 (0.011–1.231)	0.074	-	-	-	-
L5–S1	-	-	0.483 (0.153–1.529)	0.216	-	-
Preoperative back pain	0.559 (0.154–2.029)	0.377	-	-	-	-
Time from symptom onset to surgery	0.987 (0.971–1.004)	0.136	1.000 (0.988–1.012)	0.982	1.013 (0.992–1.035)	0.219
Preoperative NRS	1.554 (1.182–2.041)	0.002	1.214 (0.985–1.497)	0.069	1.126 (0.877–1.445)	0.352
Preoperative physical therapy	0.252 (0.073–0.873)	0.030	0.196 (0.062–0.621)	0.006	0.177 (0.037–0.842)	0.030
Operative time	0.991 (0.977–1.005)	0.211	0.994 (0.983–1.006)	0.350	0.989 (0.969–1.008)	0.256