Table 1. Characteristics of participants by cognitive category
CharacteristicCognitive categorya
DementiaCINDNormal cognition
n = 132n = 61n = 47
Sex, n (column %)
 Male 68 (52) 35 (57) 23 (49)
 Female 64 (49) 26 (43) 24 (51)
Median age, years (IQR)
 At clinic 82 (77–86)80 (75–83)75 (72–80)
 Left school 15 (15–16)15 (15–16)16 (15–16)
 Retired 60 (58–65)60 (58–67)61 (58–65)
Median symptom onset, months (IQR)
 Time ago 24 (12–36)18 (12–24)21 (12–36)
Type, n (column %)
 Gradual 111 (84) 55 (90) 43 (91)
 Sudden 13 (10) 5 (8) 0 (-)
 Uncertain 8 (6) 1 (1) 4 (9)
Course, n (column %
 Progressive 111 (84) 42 (69) 29 (62)
 Stepwise 2 (2) 0 (-) 0 (-)
 Regressive 1 (1) 1 (2) 1 (2)
 Static 5 (4) 7 (11) 9 (19)
 Uncertain 13 (10) 11 (18) 8 (17)
Fluctuation, n (column %
 None 112 (85) 53 (87) 45 (96)
 Within 1 day 12 (9) 5 (8) 1 (2)
 Over several days 8 (6) 3 (5) 1 (2)
Median ACE-III score (IQR)
 Total (max 100) 69 (61–74)82 (76–87)93 (90–95)
GP opinion, n (row %)
 Normal cognition 6 (18) 9 (26) 19 (56)
 CIND 52 (43) 41 (34) 27 (23)
 Dementia 74 (86) 11 (13) 1 (1)
  • aDementia according to International Classification of Diseases 10th revision (ICD-10) definition; mild cognitive impairment (MCI) according to Petersen definition.

  • ACE-III = Addenbrookes’ Cognitive Examination III. CIND = Cognitive impairment not dementia.