Objective:

To develop and validate a nomogram for diagnosing tuberculous peritoneal effusion (TPE).

Approach:

Key Findings:

• A total of 351 patients were included, with 245 in the training group and 106 in the validation group.
• Seven independent predictors identified: age, fever, ascites adenosine deaminase (ADA), ascites carcinoembryonic antigen (CEA), ascites total protein (TP), serum CEA, and serum creatinine (Cr).
• The nomogram model achieved an AUC of 0.974 for the training group and 0.955 for the validation group.
• Calibration curves showed good agreement, and decision curve analysis (DCA) indicated the model provides the greatest net benefit.

Interpretation:

Limitations:

• Single-center study may limit generalizability.
• Retrospective design may introduce selection bias.

Conclusion:

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