Fig. 7

Construction and evaluation of immune-related nomogram model to predict overall survival of patients with LUAD. A Using stepwise regression, nine prognostic factors associated with clinical factors, immune subtypes, and immune cell infiltration were included in the nomogram model. B The C-index of training set was 0.73 and the C-index of testing group was 0.84. C The calibration curve of the nomogram in the training and testing cohort. The estimated by the nomogram is shown on the x-axis, whereas actual survival is shown on the y-axis. The one-year OS (left), three-year OS (middle), five-year OS (right) are shown. D The training and testing cohorts are presented as nomogram score. Kaplan–Meier curves were generated to analyze the difference in OS between high- and low-risk groups (with zero as the cut-off point)