The incidences of AKI in the CRP/albumin ratio ≥ 0.1 group were significantly higher than those in the CRP/albumin ratio < 0.1 group both before (50.0% [68/136] vs. 20.4% [42/206], P < 0.001) and after (46.7% [50/107] vs. 20.6% [22/107], P < 0.001) propensity score matching (Figure 3). Here, ALB is linked to acute kidney injury.