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Table 4: Spearman rank statistics for non-binary categorical evaluations for MR imaging and CT
MR Imaging (n = 74) CT (n = 19)
Spearman Rank UB LB Spearman Rank UB LB
Narrow sulci 0.626 0.464 0.747 0.787 0.518 0.914
PVWML 0.691 0.550 0.794 0.826 0.596 0.930
Note:—LB indicates lower bound; UB, upper bound; pvWML, periventricular white matter hyperintensities.
	MR Imaging (n = 74)			CT (n = 19)
	Spearman Rank	UB	LB	Spearman Rank	UB	LB
Narrow sulci	0.626	0.464	0.747	0.787	0.518	0.914
PVWML	0.691	0.550	0.794	0.826	0.596	0.930