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Table 1: 
Blood flow
Age (y)Cerebral Inflow (mL/min)SSS Outflow (mL/min)ST Outflow (mL/min)SSS Outflow as a % of Inflow (%)ST Outflow as a % of Inflow (%)
Healthy elderly, n = 12 (SD)70 (5)710 (110)310 (65)90 (30)44 (9)13 (4)
NPH, n = 20 (SD)71 (11)800 (90)280 (70)100 (20)35 (10)12 (3)
P value.34.02*.41.52.04*.62
  • Note:—SSS, indicates superior sagittal sinus; ST, straight sinus.
  • * ttest P value < .05.