Clinical and MRI data.

Expressed are mean values and standard deviation, except for EDSS and FS cerebellar scores, where a median and range are provided.
9HPT: nine-hole peg test; EDSS: Expanded Disability Status Scale; FS: functional system; GA: glatiramer acetate; GM: grey-matter; IFN: interferon; IM: intramuscular; NA: not applicable; PASAT: Paced Auditory Serial Addition Test; RRMS: relapsing-remitting multiple sclerosis; SC: subcutaneous; SDMT: Symbol Digit Modalities Test; T25FW: timed twenty-five foot walk test; WM: white-matter.
* Group comparisons were performed with Mann-Whitney U tests for age and education; Fisher's exact test for gender distribution; and the General Linear Model with gender and total intracranial volume as covariates for volumes comparisons and with education as covariate for clinical tests performances.

本数据集除扩展残疾状态量表（Expanded Disability Status Scale, EDSS）与小脑功能系统（functional system, FS）评分采用中位数与极差进行统计表述外，其余指标均以均值±标准差形式呈现。
9HPT：九孔钉板测试（nine-hole peg test）；EDSS：扩展残疾状态量表；FS：功能系统；GA：醋酸格拉替雷（glatiramer acetate）；GM：灰质（grey-matter）；IFN：干扰素（interferon）；IM：肌内注射（intramuscular）；NA：不适用（not applicable）；PASAT：步调听觉连续加法测试（Paced Auditory Serial Addition Test）；RRMS：复发缓解型多发性硬化（relapsing-remitting multiple sclerosis）；SC：皮下注射（subcutaneous）；SDMT：符号数字模态测试（Symbol Digit Modalities Test）；T25FW：25英尺步行计时测试（timed twenty-five foot walk test）；WM：白质（white-matter）。
* 组间比较采用如下统计方案：针对年龄与受教育程度，采用曼-惠特尼U检验（Mann-Whitney U tests）；针对性别分布，采用费舍尔精确检验（Fisher's exact test）；针对脑容积比较，采用以性别与颅内总容积为协变量的一般线性模型（General Linear Model）；针对临床测试表现，则采用以受教育程度为协变量的一般线性模型。