Table II.
Cross‐validation results for the decoding of eating disorders
| Groups/Region | H | DA (%) | P | SEN | SPE | Mean t‐value | Mean con‐values | Vox* (%) |
|---|---|---|---|---|---|---|---|---|
| BED and C‐OW | ||||||||
| ACC | R | 67.6 | 0.031 | 82.4 | 52.9 | −0.3 | 0.16/0.30 | 0 |
| Insula | L | 70.6 | 0.016 | 76.5 | 64.7 | −0.9 | −0.15/0.07 | 1 |
| med. OFC | L | 67.7 | 0.039 | 70.6 | 64.7 | 0.1 | 0.29/0.22 | 0 |
| v. Striatum | R | 70.6 | 0.013 | 58.8 | 82.4 | −1.5 | −0.02/0.52 | 0 |
| BED and C‐NW | ||||||||
| Insula | R | 86.2 | <10−5 | 82.4 | 90.0 | 0.5 | −0.04/−0.12 | 0 |
| lat. OFC | L | 70.3 | 0.014 | 70.6 | 70.0 | −1.0 | −0.03/0.21 | 4 |
| BN and C‐OW | ||||||||
| lat. OFC | R | 86.3 | <10−4 | 78.6 | 94.1 | −0.1 | −0.05/−0.03 | 0 |
| BN and C‐NW | ||||||||
| ACC | L | 67.1 | 0.040 | 64.3 | 70.0 | 0.8 | 0.51/0.28 | 1 |
| Insula | R | 77.9 | 0.001 | 85.7 | 70.0 | 1.4 | 0.18/−0.14 | 3 |
| v. Striatum | L | 68.2 | 0.037 | 71.4 | 65.0 | 0.1 | 0.44/0.40 | 0 |
| BED and BN | ||||||||
| ACC | R | 71.0 | 0.019 | 70.6 | 71.4 | −0.6 | 0.29/0.50 | 0 |
| Insula | R | 70.4 | 0.022 | 76.4 | 64.3 | −1.6 | −0.12/0.35 | 5 |
| Insula | L | 68.1 | 0.040 | 64.7 | 71.4 | −0.9 | 0.00/0.26 | 1 |
| v. Striatum | L | 84.0 | <10−3 | 82.4 | 85.7 | −1.1 | 0.21/0.63 | 1 |
H: Hemisphere; DA (%): decoding accuracy calculated as the mean of sensitivity and specificity. Thereby, in each pair‐wise analysis (BED vs. C‐OW; BED vs. C‐NW; BN vs. C‐OW; BN vs. CNW; BED vs. BN) a correctly identified subject of the group named first was considered as a true positive; P: probability of observed DA according to χ2‐distribution; SEN: sensitivity; SPE: specificity; mean t‐value for the difference of contrast maps between groups (BED minus C‐OW, BED minus C‐NW, BN minus C‐OW, BN minus C‐NW, and BED minus BN) in voxels underlying searchlight classifiers selected across all first level LOO iterations for a given ROI; mean con‐values: mean of contrast values for both groups of a pair in voxels underlying searchlight classifiers selected across all first level LOO iterations for a given ROI; Vox*(%): percentage of voxels underlying selected searchlight classifiers showing significant t‐contrasts (P uncorrected = 0.001, no cluster size criterion, two‐sided); lat.: lateral; v: ventral. Bold text indicates a significant decoding accuracy on a FWE‐corrected level (Bonferroni‐correction, i.e., P FWE = 0.05 [α]/12 [number of ROIs] = 0.004). Non‐bold text indicates a significant decoding accuracy according to an uncorrected threshold (P uncorrected = 0.05).