Sex-specific issues of central and peripheral arginine-vasopressin concentrations in neurocritical care patients

BMC Neuroscience

Table 2 Correlations of AVP concentrations and serum sodium and hematocrit

	All patients		Female postmenopausal		Female premenopausal		male
	Spearman’s rho	p-value	Spearman’s rho	p-value	Spearman’s rho	p-value	Spearman’s rho	p-value
AVP CSF vs. Na	− 0.237 [− 0.554 to 0.140]	0.208	− 0.694* [− 0.913 to − 0.164]	0.008	− 0.8 [− 0.998 to 0.819]	0.333	0.283 [− 0.329 to 0.727]	0.349
AVP plasma vs. Na	0.002 [− 0.359 to 0.362]	0.993	− 0.23 [− 0.697 to 0.375]	0.45	− 0.2 [− 0.975 to 0.944]	0.917	0.2 [− 0.400 to 0.680]	0.513
AVP saliva vs. Na	− 0.135 [− 0.474 to 0.238]	0.476	− 0.066 [− 0.596 to 0.504]	0.829	0 [− 0.961 to 0.961]	1	− 0.153 [− 0.651 to 0.438]	0.619
AVP CSF vs. Hkt	0.051 [− 0.316 to 0.404]	0.791	− 0.522 [− 0.845 to 0.081]	0.071	0.4 [− 0.924 to 0.986]	0.75	0.286 [− 0.326 to 0.729]	0.344
AVP plasma vs. Hkt	− 0.063 [− 0.415 to 0.304]	0.739	− 0.22 [− 0.691 to 0.383]	0.47	0.4 [− 0.924 to 0.986]	0.75	− 0.313 [− 0.744 to 0.301]	0.297
AVP saliva vs. Hkt	0.063 [− 0.304 to 0.414]	0.74	0.132 [− 0.454 to 0.638]	0.669	0.4 [− 0.924 to 0.986]	0.75	0.198 [− 0.401 to 0.678]	0.517

Na sodium, Hkt hematocrit
Due to the small size of the subgroups, statistical significance was only evident from a correlation coefficient ρ > 0.69 (*p < 0.01)
Confidence intervals (given in square brackets) are very wide throughout, however, in postmenopausal females, a strict negative correlation can be assumed in AVP CSF vs. serum sodium concentrations

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