Results
PTB
A total of 286 patients were included in this study, of which 143 were case subjects and 143 were control subjects. The 286 patients were randomly divided into the training and internal validation sets in a ratio of 3:1. The training set comprised 102 case subjects and 112 control subjects who were used to develop the model and nomogram. The validation set containing 40 case subjects and 32 control subjects was used for internal validation. Table Clinical characteristics of PTB patients in the training set and validation set