Table 4:

Comparison of DTI metrics between the patients before surgery and the control group for the C2 level

Groups/Statistics	MD (10⁻³mm²/s)	AD (10⁻³mm²/s)	RD (10⁻³mm²/s)	FA
Patients (n = 52)	0.74 (0.71–0.77)^{^a}	1.35 (1.33–1.42)	0.42 (0.39–0.47)	0.64 (0.59–0.67)
Controls (n = 20)	0.75 (0.72–0.79)	1.43 (1.33–1.48)	0.41 (0.37–0.45)	0.68 (0.64–0.70)
Z value	Z = −0.33	Z = −1.62	Z = −1.04	Z = −2.44
P value	P = .74	P = .10	P = .30	P = .02^{^b}