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Table 2 Clinical characteristics and retinal vascular bifurcation measurements, by refractive error status

From: Changes in retinal vascular bifurcation in eyes with myopia

Parameter

High myopia

Low to moderate myopia

Non-myopia

p value

Number

99

234

160

 

Age (years)

38.67 (10.56)

39.35 (8.95)

45.48 (10.70)

< 0.001*

Female, n (%)

62 (62.62%)

142 (60.68%)

109 (68.13%)

0.486

Spherical equivalent (D)

-8.62 (2.23)

-2.99 (1.44)

0.26 (0.92)

< 0.001*

Intraocular pressure (mmHg)

15.37 (2.76)

15.40 (2.58)

15.14 (2.46)

0.750

Body mass index (kg/m2)

23.33 (3.78)

22.48 (2.64)

23.11 (2.84)

0.208

Glycosylated hemoglobin (%)

5.30 (0.35)

5.24 (0.28)

5.41 (0.31)

< 0.001*

Total cholesterol (mmol/L)

4.96 (0.68)

4.95 (0.83)

5.05 (0.81)

0.299

Systolic Blood Pressure (mmHg)

115.01 (13.89)

113.19 (12.35)

115.19 (11.16)

0.481

Diastolic Blood Pressure (mmHg)

71.04 (9.86)

69.38 (8.36)

69.67 (8.68)

0.398

Arteriolar branching angle (degree)

70.11 (11.73)

76.59 (11.41)

75.30 (10.66)

< 0.001*

Venular branching angle (degree)

74.51 (12.69)

76.61 (9.94)

75.97 (10.70)

0.277

Arteriolar branching coefficient

1.48 (0.21)

1.41 (0.18)

1.47 (0.19)

0.001*

Venular branching coefficient

1.31 (0.18)

1.26 (0.14)

1.27 (0.15)

0.014*

Arteriolar asymmetry ratio

0.82 (0.07)

0.82 (0.06)

0.81 (0.07)

0.112

Venular asymmetry ratio

0.74 (0.10)

0.71 (0.10)

0.72 (0.10)

0.041*

Arteriolar angular asymmetry (degree)

30.28 (13.52)

33.76 (11.44)

32.56 (11.25)

0.051

Venular angular asymmetry (degree)

37.21 (13.55)

41.39 (13.41)

41.02 (12.46)

0.026*

Log (arteriolar junctional exponent)

0.41 (0.06)

0.43 (0.05)

0.41 (0.05)

0.002*

Log (venular junctional exponent)

0.45 (0.06)

0.46 (0.05)

0.46 (0.05)

0.224

  1. All data were expressed as mean (SD) or number (percentages), as appropriate. Chi-square test (categorical variables) and one-way ANOVA (normally distributed continuous variables) were used to perform comparisons. P-values were corrected for multiple comparisons using the Bonferroni method
  2. *Statistical difference (p < 0.05) among participants with different refractive error status