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Table 3 Validity of CSF flowmetry and opening pressure in differentiating cases and control

From: Evaluation of cerebrospinal fluid flow dynamic changes in patients with idiopathic intracranial hypertension using phase contrast cine MR imaging

Test result variable(s) AUC 95% confidence interval Cutoff point Sensitivity Specificity PPV NPV Accuracy
Lower bound Upper bound
PSV 0.628 .422 .833 ≥ 2.65 83.3% 60.0% 86.2% 54.5% 77.5%
PDV 0.628 .431 .825 ≥ 2.15 76.7% 50.0% 82.1 41.7 70.0%
SV 0.543 .347 .738 ≥ 24.25 56.7% 50.0% 77.3% 27.8% 55%
MF 0.583 .397 .769 ≥ 0.1188 56.7% 80.0% 69.5% 38.1% 62.5%
Area 0.568 .365 .772 ≤ 0.043 70.0% 50.0% 80.8% 35.7% 65%
Opening pressure 1.000 1.000 1.000 ≥ 26.0 92.6% 100.0% 100% 83.3% 94.6%
  1. AUC area under the curve, NPV negative predictive value, PPV positive predictive value, PSV peak systolic velocity (cm/s), PDV peak diastolic velocity (cm/s), SV stroke volume (ml/min), aqueductal area (cm2), MF mean flow (cm3/s)