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Table 4 Sonographic characteristics – Horos analysis

From: Substantia nigra hyperechogenicity and brain ventricular size as biomarkers of early dementia with Lewy bodies

 

DLB (n = 23)

AD (n = 26)

PD (n = 27)

Controls (n = 31)

p-valueA

Intensity of the right SN echogenicity

61.30 (46.39–80.50)

65.87 (50.91–102.10)

67.89 (54.92–96.58)

83.38 (52.60–96.80)

0.358

Heterogeneity of the right SN echogenicity (CV)

30.90 (25.00–37.80)

28.26 (22.26–31.03)

25.29 (20.74–27.92)

23.72 (20.53–34-54)

0.237

Intensity of the left SN echogenicity

62.20 (40.13–78-48)

72.14 (48.83–95.46)

68.91 (56.23–85.64)

68.97 (51.74–89.53)

0.369

Heterogeneity of the left SN echogenicity (CV)

31.46 (22.38–36.39)

26.17 (23.50–35.32)

23.46 (22.76–31.48)

25.39 (22.10–29.25)

0.414

  1. Data represent median and IQR (25th and 75th percentiles) (unnamed units). CV Coefficient of variation
  2. AKruskall-Wallis test without pairwise comparisons due to the absence of overall statistical significance with a two-sided p ≤ 0.1