Figure 2.

Serum free and total cortisol concentrations. Patients with subarchnoid haemorrhage (SAH) had higher initial (a) serum total cortisol (p = 0.001) and (b) free cortisol concentrations (p < 0.001) than control patients. At later time points, there were no differences between the groups in this respect. Data are presented as median, interquartile ranges and outliers.