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Table 2 Baseline characteristics according to the outcome at follow-up

From: Impact of a clinical decision support tool on prediction of progression in early-stage dementia: a prospective validation study

Characteristic

n

Stable

Progressed

p value

n = 345

n = 84

Demographics

 Female, n (%)

429

191 (55)

39 (46)

< .0001

 Age, years

429

65 ± 9

72 ± 8

< .0001

 Duration of symptoms, years

380

3 ± 3

3 ± 3

0.36

 MCI/AD/non-AD, n

 

16/44/24

NA

 CDR, n (0.0/0.5/1.0)

424

198/136/6

11/52/4

NA

APOE status

 APOE e4 carrier, n (%)

146

50 (14)

14 (17)

0.12

Cognitive tests

 MMSE

427

28 ± 2

26 ± 3

< .0001

 Memory—learning

420

42 ± 11

31 ± 10

< .0001

 Memory—recall

420

9 ± 4

4 ± 3

< .0001

 TMT-A, seconds

422

42 ± 19

58 ± 30

< .0001

 TMT-B, seconds

402

102 ± 60

164 ± 82

< .0001

 Fluency—animal

407

23 ± 7

18 ± 6

< .0001

 Fluency—letter

377

14 ± 5

12 ± 5

0.006

 Clock-drawing

394

3 ± 1

2 ± 1

< .0001

CSF

 Aβ42, pg/ml

145

933 ± 285

748 ± 338

0.002

 P-tau, pg/ml

145

53 ± 24

63 ± 33

0.05

 Total tau, pg/ml

145

348 ± 197

445 ± 318

0.03

MRI—visual scores

 GCA (median, Q1–Q3)

418

0.7 ± 0.7 (1, 0–1)

1.2 ± 0.8 (1, 1–2)

< .0001

 MTA, right (median, Q1–Q3)

398

0.6 ± 0.8 (0, 0–1)

1.4 ± 1.0 (1, 1–2)

< .0001

 MTA, left (median, Q1–Q3)

398

0.6 ± 0.8 (0, 0–1)

1.6 ± 1.0 (1, 1–2)

< .0001

 Fazekas score (median, Q1–Q3)

420

0.8 ± 0.8 (1, 0–1)

1.1 ± 0.8 (1, 1–2)

0.009

  1. Differences between groups were assessed using independent t test and chi-square test. Data are presented as mean ± SD unless otherwise specified
  2. Abbreviations: CDR clinical dementia rating (global score, range 0–3); MMSE Mini-Mental State Examination; Memory Rey Auditory Verbal Learning Test (RAVLT) values, using z-scoring for those with only the Consortium to Establish a Registry for Alzheimer’s Disease (CERAD) word list memory test; TMT Trail Making Test; CSF cerebrospinal fluid; Aβ42 amyloid beta 1–42; P-tau tau phosphorylated at threonine 181; MRI magnetic resonance imaging; GCA global cortical atrophy; MTA medial temporal lobe atrophy