Fig. 5

DCA of the nomogram. A PLOS benefit in the development set. B PLOS benefit in the validation set. The blue line represents model10 (based on which the nomogram was established. The red line represents model11. The results of the prediction models are the blue and red lines. The two other lines are “intervention for all” (grey line) and “intervention for none” (black line). DCA, decision curve analysis; DEV, development; PLOS, prolonged length of stay; VAD, validation