کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6038988 1188810 2008 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Selection of the control group for VBM analysis: Influence of covariates, matching and sample size
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب شناختی
پیش نمایش صفحه اول مقاله
Selection of the control group for VBM analysis: Influence of covariates, matching and sample size
چکیده انگلیسی
In the regression analysis, focal gender effects disappeared with inclusion of TIV as an additional regressor. Age had a small but unique contribution to focal volume changes. In the VBM analysis of HS patients, detection of abnormalities was strongly influenced by choice of covariates. The optimal combination was different for grey and white matter (for grey matter: TIV; for temporal lobe white matter: TIV, age and gender). A control group size of 70-90 subjects allowed optimal detection of volume loss in the hippocampus and thalamus. At these group sizes, matched control groups did not consistently prove superior to deliberately “unmatched” groups of the same size. The optimal detection of volume loss was obtained with all available control subjects.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NeuroImage - Volume 41, Issue 4, 15 July 2008, Pages 1324-1335
نویسندگان
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