Table 4 Retinal vessel density in optical coherence tomography angiography among study groups.

From: Assessment of individual retinal layer thickness and vascular changes in Alzheimer’s disease

Parameter

AD

HC

p value

Median

Min

Max

Q1

Q2

Median

Min

Max

Q1

Q2

Vessel density

SVP whole (%)

48

39

56

43

49

49

41

55

45

51

0.149

SVP fovea (%)

19

8

31

15

24

22

14

38

20

26

0.050

SVP parafovea (%)

50

36

59

45

53

52

39

58

49

54

0.224

SVP perifovea (%)

48

39

55

44

50

49

42

56

46

52

0.078

DVP whole (%)

46

37

54

40

49

49

39

64

45

51

0.030

DVP fovea (%)

35

21

46

30

38

40

28

48

37

43

0.004

DVP parafovea (%)

52

43

58

49

56

53

47

62

51

54

0.625

DVP perifovea (%)

45

36

55

40

50

50

40

65

47

52

0.012

FAZ (mm2)

0.3

0.1

0.5

0.2

0.4

0.2

0.1

0.5

0.2

0.3

0.021

  1. Statistical significance was assessed using the Mann-Whitney U Test.
  2. Significant values appear in boldface.
  3. AD Alzheimer’s disease, HC healthy control, Min minimum, Max maximum, Q1 lower quartile, Q2 upper quartile, SVP superficial vascular plexus, DVP deep vascular plexus, FAZ foveal avascular zone.
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