Fig. 4.

Predictive factors in 53 models. MRC Medical Research Council, PCO2 Partial Pressure of Carbon Dioxide, BUN blood urea nitrogen, GCS Glasgow Coma Scale, CAT Score COPD Assessment Test Score, AM/AR Use inspiratory assistance muscle/accessory breathing, PH Potential of hydrogen; PLT Platelet count; WBC White blood cell, EOS Eosinophil count, MC/BSO Metastatic cancer/malignant tumors of the blood or solid organs, LT-HOT Long-term home oxygen therapy, NIMV Non-invasive mechanical ventilation