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Table 1: 
Demographic features of patients and controls
ControlFTDSDPNFAAD
No.271213919
Sex (M:F)7:203:105:93:67:12
Age (yr)61.1 (53–78)59.45 (42–72)63.77 (52–77)64.9 (57–78)61.8 (56–75)
MMSE28.7 (25–30)20.83 (10–30)*22.92 (5–29)*22.5 (15–28)†23.1 (7–29)*
Disease duration (yr)–1.65 (0,25–3,4)3.90 (1,3–7,7)‡3.56 (0,06–8,13)2.87 (0–4,97)
  • Note:—FTD indicates frontotemporal dementia; SD, semantic dementia; PNFA, progressive nonfluent aphasia; AD, Alzheimer disease; MMSE, MIni-Mental State Examination.
  • *,†,‡ Kruskal-Wallis test.
  • * P < .01 compared with controls.
  • † P < .05 compared with controls.
  • ‡ P < 01 compared with FTD.