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. Author manuscript; available in PMC: 2006 Jan 25.
Published in final edited form as: Neurosurgery. 2004 Sep;55(3):582–593. doi: 10.1227/01.neu.0000134385.23401.01

TABLE 1.

Characteristics, adjustable valve, ventricular volume, and clinical outcomes data for all 51 patientsa

Patient characteristics
Age (yr)
 Mean ± SD 75 ± 8.2
 Range 52-88
Sex (women/men) 28/23
Presenting symptoms (no. of patients with particular symptom/total for whom there are data)
 Gait 50/51 (98%)
 Incontinence 40/51 (78.4%)
 Dementia 49/51 (96.1%)
Initial adjustable valve setting (mmH2O)
 Median 120
 Mean ± SD 125 ± 33.8
 Range 40-200
Initial ventricular volume (ml)
 Mean ± SD 135.4 ± 106.7
 Range 14.6-731.4
Follow-up time (wk) from first to last volume measurement/CT scan
 Mean ± SD 50.8 ± 43.6
 Range 3-219
No. of valve adjustments
 Mean ± SD 2 ± 1.6
 Range 0-10
Symptom improvement (no. of patients improved/total for whom there are data)
 Gait 44/51 (86.3%)
 Incontinence 35/50 (70%)
 Dementia 33/48 (68.8%)
Weighted factor for clinical improvement in all three symptom categories
 Mean ± SD 73.8 ± 37.4
a

SD, standard deviation; CT, computed tomographic.