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Table 1 Rate of discordance across diagnostic groups

From: Discordant amyloid-β PET and CSF biomarkers and its clinical consequences

  Total SCD MCI AD dementia Non-AD dementia
N (%) 768 194 (25) 127 (17) 309 (40) 138 (18)
 Discordant, cut-off < 813 ng/L (%)* 97 (13) 30 (15) 17 (13) 28 (9) 22 (16)
CSF+/PET− (%) 65 (67) 20 (67) 9 (53) 17 (61) 19 (86)
 Discordant, excl. ± 5% cut-off (%) 75 (11) 27 (15) 14 (12) 15 (5) 19 (15)
 Discordant, excl. ± 10% cut-off (%) 56 (9) 20 (12) 10 (10) 13 (5) 13 (11)
  1. Abbreviations: AD Alzheimer’s disease, CSF cerebrospinal fluid, MCI mild cognitive impairment, PET positron emission tomography, SCD subjective cognitive decline
  2. *Proportion of discordant patients between diagnostic groups does not differ significantly (chi-squared test)