The performance of known prediction models for AKI-D was found reasonably well in the prediction of KDIGO-AKI, with the model by Thakar having the highest predictive value in the discrimination of patients with risk for all KDIGO-AKI stages.

Lower serum C3 levels at the diagnosis is associated with poorer patient and renal outcomes in AAV patients.

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Renal function at presentation, anaemia and BVAS should be included in prediction models for the outcomes for the AAV patients.