Group | Age | SSS outflow | ST outflow | Total outflow | Estimated sinus pressure |
---|---|---|---|---|---|
 | Yr | ml/min | ml/min | ml/min | mmHg |
Normal young n = 10 |  |  |  |  |  |
Mean | 10 | 620 | 190 | 810 | 10.5 |
SD | 4 | 160 | 60 | 220 | 3.6 |
Normal adult n = 20 |  |  |  |  |  |
Mean | 44 | 360 | 110 | 470 | 7.7 |
SD | 10 | 80 | 40 | 110 | 1.1 |
Hydrocephalus n = 20 |  |  |  |  |  |
Mean | 45 | 280 | 75 | 355 | 10.2 |
SD | 10 | 60 | 40 | 80 | 5.5 |
p value | 0.81 | 0.002* | 0.01* | 0.001* | 0.008* |