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Table 1 Characteristics of participants by cognitive status

From: Retinal microvasculature dysfunction is associated with Alzheimer’s disease and mild cognitive impairment

Characteristics

AD (n = 24)

MCI (n = 37)

Control (n = 29)

P value*

Age

74.9 ± 6.0

77.9 ± 6.4

76.7 ± 5.3

0.176

Gender, female

17 (73)

16 (44)

13 (45)

0.082

Race, Chinese

16 (84)

30 (82)

23 (79)

0.082

Diabetes, yes

9 (41)

10 (32)

4 (14)

0.039

Hypertension, yes

15 (78)

21 (62)

17 (59)

0.319

Systolic blood pressure, mmHg

148 ± 11

139 ± 18

131 ± 16

0.008

Diastolic blood pressure, mmHg

73 ± 9

70 ± 9

70 ± 8

0.363

MMSE

20.3 ± 6.1

23.9 ± 6.3

24.8 ± 4.8

0.026

Neuroimaging markers

 MTA scores

1.3 ± 0.7

1.4 ± 0.8

1.7 ± 0.7

0.297

 GCA scores

1.5 ± 0.6

1.6 ± 0.6

2.3 ± 0.8

0.006

 WMH scores

1.6 ± 0.7

1.5 ± 0.7

2.1 ± 0.7

0.098

Signal strength, out of 10

9.8 ± 0.8

9.8 ± 0.5

9.6 ± 0.7

0.010

  1. Data presented are mean (SD) or number (%), as appropriate
  2. AD Alzheimer’s disease, MCI mild cognitive impairment, MMSE Mini-Mental State Exam, MTA medial temporal atrophy, GCA global cortical atrophy, WMH white matter hyperintensities
  3. *P value was obtained with ANOVA for the continuous variables and with chi-square tests for categorical variables