Fig. 2

SMPP nomogram prediction model. The different values of each variable included in the nomogram have corresponding scores perpendicular to the scoring scale at the top; the sum of the scores for each item is the total score, which corresponds to the probability of death on the prediction probability line at the bottom. For example, for one child with MPP, a CRP of 110 mg/L corresponds to a score of 24, a left upper lobe CT score of 1 point corresponds to a score of 28.5, a bronchitis score of 12 points corresponds to a score of 53, a SOFA score of 5 points corresponds to a score of 41, and an APACHE II score of 8 points corresponds to a score of 54.5, will result in a corresponding total score of 24 + 28.5 + 53 + 41 + 54.5 = 201, with a probability of developing SMPP of 0.913, meaning that this child will have a very high risk of developing SMPP and may need closer monitoring and treatment

* SOFA: Sequential organ failure assessment, CT: Computed tomography, APACHE: Acute Physiology and Chronic Health Evaluation, CRP: C-reactive protein