Table 3.

Correlations between FA values and clinical scores.

	Age	EDSS	USP-OAB
FA of mean skeleton of all subjects (n = 43)	r = −0.36 * p = 0.018	N/A	r = −0.493 ** p = 0.001
FA of mean skeleton of pwMS (n = 26)	r = −0.51 ** p = 0.008	r = −0.271 p = 0.181	r = −0.449 * p = 0.021

Spearman’s correlations between FA value and age; EDSS and USP-OAB sub-score were tested in HCs and pwMS. EDSS: Expanded Disability Status Scale; FA: fractional anisotropy; MS: multiple sclerosis; N/A: not applicable; p: p-value of correlation; pwMS: patients with MS; r: Spearman’s correlation coefficient (two-tailed); USP-OAB: Urinary Symptom Profile OAB sub-score. *: p < 0.05; **: p < 0.01.