Fig. 1

Nomogram model for early prediction of refractory Mycoplasma pneumoniae pneumonia. Instructions for using the nomogram: (a) Draw a line perpendicular from each of the six variables to the top line labeled “Points” to obtain the corresponding number of points; (b) add the points obtained from each of the six variables to obtain the total number of points; and (c) draw a line descending from the axis labeled “Total points” until it intercepts the RMPP type. The risk value corresponding to the RMPP type represents the specific risk at which RMPP will occur.