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Table 1: 
Subject characteristics
Age Group (y)NFemale (%)Education (y; mean ± SD)Age (y; mean ± SD)
20–30185615 ± 1.624 ± 3.6
31–40175317 ± 1.935 ± 3.4
41–50195817 ± 1.546 ± 2.6
51–60195817 ± 1.455 ± 2.6
61–70185016 ± 2.366 ± 2.6
71–80195316 ± 2.575 ± 2.6
81–90206515 ± 2.284 ± 2.6
50–88*276716 ± 2.772 ± 10.8
  • Note:—Normal controls in age groups 20–90 = 130.
  • * Alzheimer disease group.