Table 3:

Comparison of intraspinal CSF volumes at each SIH stage relative to the ECSF value

Parameter	ECSF (n = 23)	SIH
Parameter	ECSF (n = 23)	Ini (n = 23)	Int (n = 18)	Rec (n = 18)
Intraspinal CSF volumes (mL)	93.03 ± 13.23	72.31 ± 19.35	81.15 ± 25.41	93.74 ± 20.33
P values, ECSF vs SIH^{^a}	–	<.001^{^b}	<.05^{^b}	.772

Note:—Ini indicates initial; Int, intermediate, Rec, recovery.
↵a Paired t test.
↵b Significant.