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Annals of Intensive Care
Fig. 2 | Annals of Intensive Care

Fig. 2

From: Prognostic impact of elevated lactate levels on mortality in critically ill patients with and without preadmission metformin treatment: a Danish registry-based cohort study

Fig. 2

Association of lactate level with estimated 30-day mortality for metformin users and nonusers. Data were computed using the one minus the Kaplan–Meier survival estimate. Restricted cubic splines were constructed with four evenly spaced knots based on quantiles. A multiply imputed dataset was used for this analysis. The grey area represents the 95% confidence interval

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