Fig. 2. ( A ) Correlations between initial S100B value (μg/l) and World Federation of Neurological Surgeons (WFNS) and Fisher scores ( P < 0.01) as well as location of the aneurysm (not significant). For graphical reasons, three patients were excluded from the representation. Statistical analysis was performed with the totality of the patients. ( B ) S100B time course values (μg/l) according to WFNS and Fisher scores as well as location of the aneurysm. The box plots summarize the distribution of points at each factor level. The ends of the box are the 25th and 75th quartiles. The line across the middle of the box identifies the median sample value. The whiskers extend from the ends of the box to the outermost data point that falls within the distances computed. Repeated measures were all significant ( P < 0.02). Ant Co = anterior communicating artery; Ca = cerebral anterior artery; ICA = internal carotid artery; MCA = middle cerebral artery; PCA = posterior communicating artery.