Table 3.

Association of Surgical Technique With Adverse Outcomes (Single- and Multi-Level Surgeries)^a.

Outcome	Conventional	Computer Assisted	Multivariate Logistic Regressionb		P Value
			OR	95% CI
Any adverse event
Single level	14.0%	7.9%	0.52	0.34-0.78	.002
Multi-level	28.1%	18.7%	0.54	0.41-0.70	<.001
Any minor adverse event
Single level	13.0%	7.3%	0.51	0.34-0.79	.002
Multi-level	26.9%	17.9%	0.54	0.42-0.71	<.001

Abbreviations: OR, odds ratio; CI, confidence interval.

^aValues in boldface indicate statistical significance (P < .05).

^bEach line represent a separate multivariate logistic regression analysis for each variable and adjusted odds ratio and P value by controlling for all demographics and comorbidities found in Table 1.