Table 1 Demographics and clinical characteristics of the subjects.

From: The Importance of Signal Strength in Quantitative Assessment of Retinal Vessel Density Using Optical Coherence Tomography Angiography

 

SS 7 (n = 94)

SS 8 (n = 162)

SS 9 (n = 125)

SS 10 (n = 65)

p-value

Age (mean ± SD, years)

26.12 ± 8.53

25.95 ± 8.08

27.15 ± 9.05

27.32 ± 7.76

0.526*

Sex (male/female)

60/34

107/55

87/38

38/27

0.477†

BCVA (mean ± SD, LogMAR)

0.02 ± 0.05

0.02 ± 0.05

0.02 ± 0.05

0.03 ± 0.08

0.587*

Spherical equivalent (mean ± SD, diopters)

−2.44 ± 2.25

−1.95 ± 2.30

−1.90 ± 2.36

−2.18 ± 1.90

0.099*

Intraocular pressure (mean ± SD, mmHg)

15.77 ± 3.57

15.86 ± 3.45

15.66 ± 3.62

15.92 ± 2.76

0.950*

Central corneal thickness (mean ± SD, μm)

537.93 ± 45.76

545.00 ± 50.64

541.74 ± 40.69

553.93 ± 48.39

0.219*

Axial length (mean ± SD, mm)

25.52 ± 1.26

25.17 ± 1.27

24.95 ± 1.26

25.24 ± 1.05

0.101*

Central macular thickness (mean ± SD, μm)

251.09 ± 19.43

253.07 ± 19.57

255.08 ± 20.99

250.69 ± 19.27

0.379*

Average RNFL thickness (mean ± SD, μm)

94.90 ± 8.71

95.70 ± 8.72

96.81 ± 8.59

98.63 ± 8.38

0.071*

  1. SS = signal strength; BCVA = best-corrected visual acuity; logMAR = logarithm of the minimum angle of resolutions; RNFL = retinal nerve fiber layer.
  2. *The p-value was obtained from one-way analysis of variance.
  3. †The p-value was obtained from the chi-squared test.
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