You are viewing the site in preview mode

Skip to main content

Table 3 Sensitivity, specificity, PPV, NPP and accuracy

From: Evaluating the cerebrospinal fluid tap test with the Hellström iNPH scale for patients with idiopathic normal pressure hydrocephalus

  Gait domain CSF TT/total iNPH scale postoperativelya N = 116 Balance domain CSF TT/Total iNPH scale postoperativelya N = 115 Gait and Balance domain CSF TT/total iNPH scale postoperativelya N = 116 Gait domain CSF TT/GAIT domain postoperativelyb N = 116
Sensitivity 68.1 47.8 29.7 71.8
Specificity 52.0 68.0 76.0 51.6
Positive predictive value 83.8 84.3 81.8 82.4
Negative predictive value 31.0 26.6 23.0 42.9
Accuracy 64.7 52.2 40.0 68.1
  1. Sensitivity, specificity, positive predictive value, negative predictive value and accuracy for the CSF TT with cut off ≥ 5 points in the gait domain or ≥ 16 points in the balance domain or in a combination of both on the iNPH scale
  2. aPositive outcome after surgery ≥ 5 points on the total iNPH scale
  3. bPositive outcome after surgery ≥ 5 points in the gait domain
Back to article page

Fluids and Barriers of the CNS

ISSN: 2045-8118

\