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Table 2 Clinical and neuropsychological features of the case series at entry subdivided according with the hierarchical cluster analysis into subgroup A and subgroup B (see text)

From: Brain glucose metabolism in Lewy body dementia: implications for diagnostic criteria

  Subgroup A Subgroup B Sign.
Visual hallucinations (%) 43.9% 58.1% .234
Cognitive fluctuations (%) 26.8% 29.0% .836
Parkinsonism (%) 85.4% 90.3% .529
Disease duration (mean ± sd) 2.43 ± 2.13 2.52 ± 1.53 0.835
MMSE (mean ± sd) 19.96 ± 4.39 16.24 ± 4.87 0.003*
Attentive matrices (mean ± sd) 28.05 ± 12.75 16.29 ± 12.03 0.003*
Clock drawing test (mean ± sd) 2.28 ± 2.95 0.37 ± 1.16 0.013*
Corsi span forward (mean ± sd) 2.02 ± 1.89 2.29 ± 1.59 0.673
Digit span forward (mean ± sd) 4.83 ± 0.99 4.38 ± 1.64 0.23
Semantic fluency (mean ± sd) 22.05 ± 9.47 20.06 ± 9.48 0.462
Phonemic fluency (mean ± sd) 16.03 ± 11.08 12.71 ± 11.47 0.302
Raven’s Colored Progressive Matrices (mean ± sd) 19.17 ± 6.74 13.61 ± 9.65 0.04*
Rey figure—copy (mean ± sd) 11.53 ± 10.77 9.77 ± 9.71 0.623
Rey figure—delayed recall (mean ± sd) 4.63 ± 4.12 4.33 ± 4.16 0.84
Rey Verbal Learning Test (mean ± sd) 2.46 ± 2.95 1.72 ± 2.75 0.496
Short story—delayed recall (mean ± sd) 5.2 ± 3.42 4.69 ± 5.66 0.727
  1. Data at baseline
  2. Abbreviation: sd standard deviation; *significant at p<0.05 at two-sample t-test