Fig. 2

The subgroup analysis between dPDW and AKI in various subsets. Fig. 2 illustrated the odds ratios (OR) and 95% confidence intervals (CI) for the association between perioperative changes in platelet distribution width (dPDW) and postoperative acute kidney injury (AKI) across various subgroups. Subgroups include gender, age, surgical type, CPB duration, hypertension, diabetes status, baseline eGFR, platelet transfusion, use of antiplatelet medication, and major bleeding. The analysis demonstrates a consistent association between dPDW and AKI in most subgroups, with P for interaction > 0.05 in all cases, indicating no significant heterogeneity in the effect of dPDW across these subgroups