Correlation between the predicted probability of pneumonia risk and pneumonia grade
We further explored the correlation between the predictive values of the pneumonia risk prediction model constructed in this study and the actual pneumonia severity rating. As mentioned in the method, patients with pneumonia were also classified into grades 0, 1, 2, 3, and 4 according to the extent and distribution of lung involvement (no lung involvement was categorized as grade 0); the actual pneumonia grading results are shown in TABLE 4. A positive linear correlation was found between the predicted pneumonia probability of the pneumonia risk model and actual pneumonia grade using GAM(FIGURE 5); see FIGURE 6 for examples.