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Risk of all‐cause mortality by AKI number (A) one‐episode HR 1.05 (0.98–1.13) and two or more episodes HR 2.01 (1.79–2.25). Line colours: blue (no AKI), orange (one AKI), and red (two or more AKI). Severity (B) of AKI episodes; HR for risk was 1.05 (95% CI 0.97–1.14), injury 1.41 (95% CI 1.24–1.60), and failure 1.90 (95% CI 1.64–2.20). Line colours as in Figure 1. AKI, acute kidney injury; HR, hazard ratio.
