Fig. 4: Classification of patients with PASC based on protein level in DBS.

Three proteins were used in the decision tree; the protein used in the first prediction model was alpha-synuclein, which was divided into recovery and symptom groups based on the protein standardized intensity value of 838.4. The protein used in the second prediction model was pyruvate kinase PKM, classified into psychiatric PASC and general PASC groups based on the value of 6.3556. The last model classified the symptom group based on the sorbitol dehydrogenase value of 58.4462.