Fig. 2

a OPLS-DA scores plot of RRMS (black) and AQP4-Ab NMOSD with titre ≥200 (red) NMR spectra. b OPLS-DA model validation. The accuracy of the ensemble of 1000 RRMS V. AQP4-Ab NMOSD models, as determined by classification of an independent test set, is significantly greater than that of random data. Kolmogorov-Smirnov test p-values <0.001 are represented by ***