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TABLE 2: rCBF in patients with and those without symptoms caused by venous hypertension
Measure Symptomatic Group Asymptomatic Group P Value^*
Age (y) 58.8 ± 15.3 69.4 ± 10.5 .1118
rCBF (mL/min/100g) 
    Resting 23.3 ± 5.1 33.2 ± 7.8 .0092
    Acetazolamide 27.1 ± 5.1 47.6 ± 10.9 .0003
ΔF^† 3.9 ± 2.7 14.4 ± 6.2 .0002
* Mann-Whitney U test.
† Acetazolamide rCBF − resting rCBF.

Measure	Symptomatic Group	Asymptomatic Group	P Value^*
Age (y)	58.8 ± 15.3	69.4 ± 10.5	.1118
rCBF (mL/min/100g)
Resting	23.3 ± 5.1	33.2 ± 7.8	.0092
Acetazolamide	27.1 ± 5.1	47.6 ± 10.9	.0003
ΔF^†	3.9 ± 2.7	14.4 ± 6.2	.0002