Table 4:

Symmetry of DRGs

	Level of DRGs
	L1	L2	L3	L4	L5
Ganglia position*	NA	NA	1.000	NA	1.000
Signal intensity*	0.727	0.453	0.289	0.500	0.500
Width†	0.389 (0.865)	0.476 (0.716)	0.259 (1.134)	0.834 (0.210)	0.206 (1.271)
Length†	0.641 (0.467)	1.00 (0)	0.298 (1.044)	0.214 (1.250)	0.860 (0.176)
Width/Length†	0.610 (0.512)	0.339 (0.960)	0.751 (0.319)	0.639 (0.470)	0.332 (0.974)
Architecture*	0.453	0.065	0.435	0.876	0.407

Note:—Data are calculated P values. DRG indicates dorsal root ganglion.

^*McNemar test. NA, the data is not applicable for the McNemar test because only 1, 2, and 0 pair DRGs are different in the position, respectively, at L1, L2, and L4 levels.

^†Paired t test. Data in parentheses are t values.