Table 2.

Comparison of the operated levels between FA (n = 101) and CTNav (n = 91) groups

	FA group (n = 101)	CTNav group (n = 91)	p
Single-level surgery (%)	59 (58.4)	53 (58.2)	0.980
L2–L3 (%)	0 (0.0)	1 (1.1)
L3–L4 (%)	4 (4.0)	6 (6.6)
L4–L5 (%)	38 (37.6)	38 (41.7)
L5–S1 (%)	17 (16.8)	8 (8.8)
Two-level surgery (%)	35 (34.7)	33 (36.3)	0.815
L2–L4 (%)	3 (3.0)	3 (3.3)
L3–L5 (%)	20 (19.8)	17 (18.7)
L4-S1 (%)	12 (11.9)	13 (14.3)
Three-level surgery (%)	7 (6.9)	5 (5.5)	0.681
L2–L5 (%)	5 (4.9)	4 (4.4)
L3–S1 (%)	2 (2.0)	1 (1.1)

Data are reported as counts (percentages). FA fluoroscopy assisted, CTNav CT-navigation assisted