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Table 1 Diagnostic accuracy of TCS for PD

From: Specificity of transcranial sonography in parkinson spectrum disorders in comparison to degenerative cognitive syndromes

Accuracy Cut-off
value
(cm2)
Parkinson spectrum
disorders
Cognitive
disorders
Control
n = 71
   PD
n = 71
ET
n = 58
APS
n = 3
HDP
n = 3
SP
n = 23
MCI
n = 33
D
n = 13
 
Se (%) 0.20 94.3 N/A N/A N/A N/A N/A N/A N/A
  0.26 90 N/A N/A N/A N/A N/A N/A N/A
Sp (%) 0.20 N/A 55.2 0 33.3 34.8 89.7 75 83.3
  0.26 N/A 82.8 33.3 66.7 69.6 93.1 91.7 95.8
  1. Abbreviations: N/A not applicable, TCS transcranial sonography, Se sensitivity, Sp specificity, PD Parkinson's disease, ET essential tremor, APS atypical parkinsonian syndromes, HDP hereditary degenerative parkinsonism, SP secondary parkinsonism, MCI mild cognitive impairment, D dementia