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Table 1 Demographic variables, clinical scores, and cerebrospinal fluid biomarker values at baseline examination, separated by diagnostic group

From: A language-based sum score for the course and therapeutic intervention in primary progressive aphasia

 

HC

nfvPPA

svPPA

lvPPA

 

N

Mean ± SD

range

N

Mean ± SD

range

N

Mean ± SD

range

N

Mean ± SD

range

p value

Gender (female/male)

 

16/12

 

14/14

 

12/5

 

7/6

0.388

Handedness (left/right/mix)

 

1/26/1

 

3/25/0

 

1/15/1

 

1/11/1

0.688

Education (years)

27

13.89 ± 2.83

8–18

27

12.56 ± 3.41

4–20

16

14.69 ± 4.03

8–24

13

13 ± 3.51

8–20

0.140

Age at baseline (years)

28

67.72 ± 8.08

49.8–78.7

28

67.70 ± 7.72

51.5–78.2

17

63.26 ± 6.44

53.4–77.3

13

67.03 ± 5.25

57.8–73.8

0.073

Age of initial symptoms (years)

  

27

65.33 ± 8.35

47–78

14

58.36 ± 7.08

49–75

13

62.85 ± 5.93

54–72

0.022

Disease duration (years)

  

27

2.60 ± 1.78

0.2–8.9

14

4.01 ± 1.62

1.7–6.7

13

4.18 ± 4.68

0.4–17.7

0.040

MMSE

28

28.96 ± 0.79

27–30

26

22.73 ± 6.13

9–30

16

23.19 ± 5.47

12–30

13

20.23 ± 6.29

10–27

0.385

CDR

28

0.04 ± 0.13

0–0.5

22

2.77 ± 2.87

0–13

14

3.57 ± 2.76

0.5–10

10

3.0 ± 2.93

0–8.5

0.461

FTLD-CDR

28

0.05 ± 1.58

0–0.5

22

4.98 ± 3.64

0.5–18

14

5.79 ± 3.48

2.5–12.5

10

4.75 ± 3.59

1–11

0.561

Tau

  

19

456 ± 281

139–1045

13

322 ± 125

102–493

7

651 ± 403

208–1373

0.194

ptau

  

18

55 ± 30

24–141

13

47 ± 14

22–76

7

102 ± 71

16–239

0.091

Abeta1–42

  

19

585 ± 293

336–1376

13

866 ± 393

330–1601

7

525 ± 236

125–825

0.067

  1. p values correspond to Kruskal-Wallis tests, comparing the three primary progressive aphasia subgroups
  2. All cerebrospinal fluid levels are measured in pg/ml
  3. CDR Clinical Dementia Rating Scale, FTLD-CDR frontotemporal lobar degeneration-modified Clinical Dementia Rating Scale, HC healthy controls, lvPPA logopenic variant primary progressive aphasia, MMSE Mini-Mental State Examination, nfvPPA nonfluent variant primary progressive aphasia, ptau phospho tau, svPPA semantic variant primary progressive aphasia