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Kaplan-Meier estimate of time to all-cause death or invasive mechanical ventilation (IMV). The number at risk represents the number of participants remaining at risk at the beginning of the interval. Participants who did not begin to receive IMV or die by day 29 were censored on their last study day or day 29, whichever was earlier. Abbreviations: AKI, acute kidney injury; CI, confidence interval; CKD, chronic kidney disease; HR, hazard ratio.
