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Figure 1 | Critical Care

Figure 1

From: Serum activin A and B levels predict outcome in patients with acute respiratory failure: a prospective cohort study

Figure 1

Patient selection flowchart. The initial selection step was the presence of an Acute Physiology and Chronic Health Evaluation (Apache) III diagnostic group and a sample available for analysis. Activin B samples below the limit of detection were given a nominal value to enable further analysis. Patients with non-specific etiologies were removed to enable examination of specific etiologies in this study.

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Critical Care

ISSN: 1364-8535