Skip to main content

Table 1 Demographic data and substantia nigra echogenicity of patients

From: The role of substantia nigra sonography in the differentiation of Parkinson’s disease and multiple system atrophy

  non-TD PD (n = 147) MSA-P (n = 86) P value
Age (y) 62.2 (8.4) 62.3 (7.5) 0.912
Gender (M/F) 104/43 57/29 0.557
Onset age (y) 56.8 (8.9) 58.7 (7.6) 0.096
Disease duration (y) 5.4 (4.4) 3.6 (2.1) <  0.001*
H-Y stage 2.0 (0.8) 3.5 (1.0) < 0.001*
SNL (mm2) 24.7 (12.8) 12.2 (13.6) < 0.001*
  1. Non-TD PD non-tremor dominant Parkinson’s disease, MSA-P multiple system atrophy with predominant parkinsonism, H-Y Hoehn and Yahr, SNL the larger value of bilateral SN hyperechogenicity. Two-sample T test or Chi-square test was applied for the comparisons. *P values below 0.05 were considered significant