approached significancep = 0.07
Association of subarachnoid blood volume with neurosurgical patient outcomes Blood volume was not significantly associated with length of ITU stay (r = 0.16; p = 0.34), and there was no difference in mean blood volume between patients who subsequently died and those who did not, although this approached significance (fatality group: 77.9±43.9 cm 3 ; non-fatality group: 47.0±30.2 cm 3 ; t = 1.87; p = 0.07).