2.7. Construction of a Nomogram

Univariate and multivariate cox regression analyses were conducted to investigate whether the PPAR-based signature was an independent prognosis factor in patients with BLCA. Furthermore, we also categorized patients into various subgroups stratified by clinical features, and the Kaplan-Meier curves were conducted in each subgroup to further test the predictive power of the PPAR-based signature in predicting prognosis. Based on the results of multivariate analysis, a nomogram consisting of risk score and several clinical features for predicting the over survival of 3 and 5 years was established. The calibration curve was used to evaluate the accuracy of survival prediction in the nomogram.