Volatile compounds stated as statistically different (p<0.05) in healthy and patients (group) and the effect of the site where samples were collected (site 1 - compressed tissue; site 2 - uncompressed tissue).

The Table lists the retention time, the compound name, the number of occurrence in each case, the average area of peaks normalized to the total peak area and the standard error for each site and each group, and the p value of the effect of group. A star in table evidences the compounds that are relevant for the distinction of compressed site.