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Table 1 Demographic, clinical, radiological and management data of the two management groups

From: Cardiac output in idiopathic normal pressure hydrocephalus: association with arterial blood pressure and intracranial pressure wave amplitudes and outcome of shunt surgery

  Management Groups  
  Group A (elevated MWAICP) Group B (low MWAICP) Significance
Demographic    
Patients (n) 20 (69%) 9 (31%)  
Age (yrs) 76 (53 - 84) 78 (66 - 80) ns
Gender (F/M) 12/8 3/6 ns
BMI 24.3 (15.1 - 29.4) 24.0 (20.0 - 31.3) ns
Vascular co-morbidity    
Diabetes 5 (25%) 1 (11%) ns
Hypertension 3 (15%) 3 (33%) ns
Cardiovascular 8 (40%) 3 (33%) ns
Cerebrovascular 5 (25%) 2 (22%) ns
Cardiac arrhythmia 3 (15%) 3 (33%) ns
Radiology    
Evan's index 0.37 (0.30 - 0.44) 0.38 (0.33 - 0.42) ns
Symptoms    
Duration of symptoms (yrs) 2.0 (0.4 - 10) 2.0 (0.8 - 6.0) ns
Preoperative NPH score 10 (7 - 13) 10 (9 - 11) ns
Treatment    
Conservative (n) 1 6  
Shunt (n) 19 3  
Outcome    
Shunt Non-responders 3 (16%) 3 (100%)  
Shunt Responders 16 (84%) -  
  1. Management groups were defined according to published criteria [11]. BMI: Body mass index. Significance: ns = non-significant; Fischer Exact test or one-way ANOVA).