TABLE 2:

Parameter values and results of univariate analyses with age as a covariate

	Controls	CS−	CS+	P Value
CSF %	14.3 ± 1.4	15.0 ± 2.4	16.7 ± 2.1	.319
Lesion %	0.06 ± 0.17	0.18 ± 0.51	0.34 ± 0.41	.767
MTR PH	121 ± 7.8	114 ± 10.2	112 ± 8.9	.152
MTR mean	34.1 ± 0.48	33.8 ± 0.43	33.5 ± 0.60	.147
ADC PH	3.10 ± 0.19	2.99 ± 0.19	3.07 ± 0.46	.477
ADC mean	797 ± 20	795 ± 20	798 ± 22	.627
NAA/Cre	2.20 ± 0.19	2.08 ± 0.20	1.94 ± 0.16	.064
Cho/Cre	1.01 ± 0.14	0.87 ± 0.18	0.87 ± 0.18	.055

Note.—CS indicates corticosteroids; CSF %, cerebrospinal fluid volume as a fraction of intracranial volume; Lesion %, lesion volume as a fraction of brain parenchyma volume; MTR PH and MTR mean, magnetization transfer ratio histogram peak height (arbitrary unit) and mean (percent unit); ADC PH and ADC mean, apparent diffusion coefficient histogram peak height (arbitrary unit) and mean (10⁻⁶ s/mm²); NAA/Cre and Cho/Cre, ratio of N-acetylaspartate and choline to creatine.