Table 1.
SVM classification accuracies using single modality data for each diagnostic comparison.
| SVM comparison | sMRI | DTI | fMRI contrast 1 | fMRI contrast 2 | fMRI contrast 3 | fMRI contrast 4 | fMRI contrast 5 |
|---|---|---|---|---|---|---|---|
| GM | FAS | In > CFI | Su > CFS | In > RI | Su > RS | Su > In | |
| UHR vs. HC (%) | 68.42 | 65.79 | 36.84 | 60.53 | 57.89 | 60.53 | 47.37 |
| (68.42/68.42) | (68.42/63.16) | (36.84/36.84) | (57.89/63.16) | (57.89/57.89) | (57.89/57.89) | (31.58/63.16) | |
| FEP vs. HC (%) | 63.16 | 65.79 | 68.42 | 47.37 | 65.79 | 44.74 | 63.16 |
| (57.89/68.42) | (68.42/63.16) | (63.16/73.68) | (42.11/52.63) | (63.16/68.42) | (36.84/52.63) | (47.37/78.95) | |
| FEP vs. UHR (%) | 76.67 | 56.67 | 73.33 | 53.33 | 63.33 | 46.67 | 53.33 |
| (80.00/73.33) | (46.67/66.67) | (66.67/80.00) | (40.00/66.67) | (53.33/73.33) | (46.67/46.67) | (40.00/66.67) |
MRI, magnetic resonance imaging; sMRI, structural MRI; DTI, diffusion tensor imaging; fMRI, functional MRI; GM, grey matter; FAS, fractional anisotropy skeleton; In, generation of an overt verbal initiation response; Su, generation of an overt verbal suppression response; RI, repetition of “REST” during the initiation condition; RS, repetition of “REST” during the suppression condition; CFI, visual cross-fixation during the initiation condition; CFS, visual cross-fixation during the suppression condition; UHR, Ultra-High Risk; FEP, First Episode Psychosis; HC, Healthy Subjects. Figures in brackets are the sensitivity/specificity for each classifier.