For each ROI within the mask, the program first computes the average
across the contrast values within each data set and each ROI separately. For each ROI,
it thus obtains two lists
of averaged contrast values, where the number of elements in each list corresponds
to the number of contrast images in the two gropus.
It then performs Wilcoxon test for matched pairs between these two lists
against the null hypothesis of "no difference" between the groups. Example:
vROIpaired_wilcoxtest -in1 cgroup1_*.v -in2 cgroup2_*.v mask mask.v -report liste.txt
This call prints the statistical analysis to the terminal and to an ASCII-file. A typical output may for instance look like this:
ROI z p 1 -1.941 0.0261 2 -0.985 0.1623 3 -0.609 0.2712 4 -0.561 0.2874 5 0.537 0.2957
It is possible to use a different mask for each pair of contrast images. In this case,
the number
of pairs and masks much match, and the number of ROIs and their IDs
should be consistent across all masks. An '*' can be used to specify multiple input files.
The files are then processed in lexicographical order. Please make sure that the
lexicographical
order of filenames is consistent so that each pair of contrast images is matched to
the correct mask.
vROIpaired_wilcoxtest -in1 cgroup1_*.v -in2 cgroup2_*.v -mask mask_*.v -report liste.
txt