Table 2.

Factors Predictive of the Need for Operative Intervention and Residual Pain at Final Follow-up.

	P value	Odds ratio	95% Confidence interval
Factors predictive of need for operative intervention
Women >50 years	P = .003*,a	NA	NA
BMI >30	P = 1.0	0.6	0.03-13.58
Stand-alone ALIF	P = .12	NA	NA
Male gender	P = .02*	NA	NA
New radicular pain or neurologic deficit	P = .01*	21.67	1.80-260.57
Factors predictive of residual pain
Operative intervention	P = .62	3	0.28-32.2
Women >50 years	P = .07	0.11	0.01-1.17
Male gender	P = .17	5	0.70-35.50
Fusion to pelvis	P = 1.0	0.86	0.14-5.22
BMI >30	P = 1.0	1.67	0.07-37.7
New radicular pain or neurologic deficit	P = .19	5.25	0.50-54.91

Abbreviations: BMI, body mass index; ALIF, anterior lumbar interbody fusion.

^a Women >50 years of age were less likely to require operative treatment.

*P value <.05.