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Figure 3. Clinical independence verification and nomogram prediction model. (A) Forest plot of the univariate Cox regression analysis, illustrating the prognostic impact of clinical parameters and the risk signature in bladder cancer; (B) Multivariate Cox regression findings, evaluating the independent predictive value of clinical features alongside the risk scoring system; (C) Construction of a nomogram by integrating the migrasome-associated risk signature with relevant clinical indicators; (D) Comparison of the Concordance index (C-index) between the established risk model and traditional clinical traits; (E) Assessment of the nomogram's predictive reliability for bladder cancer survival at 1-, 3-, and 5-year marks using calibration plots.