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Figure 1 | Critical Care

Figure 1

From: Red blood cell transfusion in patients with subarachnoid hemorrhage: a multidisciplinary North American survey

Figure 1

Hemoglobin (Hb) concentrations at which clinicians transfuse patients with aneurysmal subarachnoid hemorrhage (SAH). Boxplots demonstrate median and interquartile range. Circles represent "outside values" (± 1.5 times the interquartile range). Means and 95% confidence intervals are presented in the Results section. DCI, delayed cerebral ischemia; grade refers to World Federation of Neurological Surgeons classification for SAH. *P < 0.0001 in relation to grade 4 SAH (assessed using paired Wilcoxon rank-sum test and Bonferroni correction for multiple comparisons). **P = 0.001 in relation to grade 4 SAH (assessed using paired Wilcoxon rank-sum test and Bonferroni correction for multiple comparisons).

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Critical Care

ISSN: 1364-8535