Fig. 6

The DCA curve of Shingles, Diarrhea, WHO, CD4, BMI and HB, combine 1 (Shingles, CD4, BMI, HB and TC) and combine 2 (CD4, BMI and HB) in the training set and the validation set. Notes: DCA curve for 3-year overall survival (A), 5-year overall survival (B) in the training set; DCA curves for 3-year overall survival (C), 5-year overall survival (D) in the validation set. The horizontal axis represents the threshold probability, the probability of whether a patient receives treatment. The vertical axis represents the net benefit rate after the advantages minus the disadvantages. Under the same threshold probability, a larger net benefit implies that patients can obtain the maximum benefit using this model. The closer the curve in the DCA graph is to the top, the higher the value of the model diagnosis is. Abbreviations: CD4 = CD4 cell count; BMI = body mass index; HB = hemoglobin; TC = total cholesterol