Table 5 Characteristics of participants with high astigmatism, low astigmatism, and moderate astigmatism.

From: Association of nutritional intake with myopia and astigmatism

Variable

High astigmatism

Low astigmatism

Moderate astigmatism

Statistics

P

Age, years, mean ± SE

35.51 ± 1.01

32.4 ± 0.25

34.86 ± 0.65

F = 9.874

0.000

Gender, n (%)

   

χ²=1.168

0.558

Gender_male

89 (48.1%)

1570 (50.8%)

235 (48.7%)

  

Gender_female

96 (51.9%)

1521 (49.2%)

248 (51.3%)

  

Ethnicity, n (%)

   

χ²=13.698

0.090

Mexican American

39 (21.1%)

657 (21.3%)

84 (17.4%)

  

Other Hispanic

24 (13%)

362 (11.7%)

49 (10.1%)

  

Non-Hispanic White

64 (34.6%)

1284 (41.5%)

209 (43.3%)

  

Non-Hispanic Black

53 (28.6%)

659 (21.3%)

119 (24.6%)

  

Other race

5 (2.7%)

129 (4.2%)

22 (4.6%)

  

PIR, mean ± SE

2.2 ± 0.12

2.46 ± 0.03

2.54 ± 0.08

F = 3.011

0.049

OR right sphere, D, mean ± SE

1.8 ± 0.04

2.68 ± 0.01

2.2 ± 0.03

F = 323.903

0.000

OR right cylinder, D, mean ± SE

3.27 ± 0.09

0.48 ± 0

1.5 ± 0.01

F = 6149.181

0.000

OR right axis, deg, mean ± SE

95.04 ± 3.19

82.43 ± 1.04

89 ± 2.57

F = 6.475

0.002

Right keratometry power flat curve, D, mean ± SE

43.23 ± 0.28

43.24 ± 0.04

43.46 ± 0.12

F = 2.107

0.122

Right keratometry power steep curve, D, mean ± SE

46.06 ± 0.28

44.05 ± 0.04

44.73 ± 0.12

F = 77.153

0.000

OR left sphere, D, mean ± SE

−0.76 ± 1.22

−0.52 ± 0.13

−1.22 ± 0.47

F = 1.526

0.218

OR left cylinder, D, mean ± SE

5.33 ± 1.12

1.08 ± 0.12

2.39 ± 0.44

F = 30.410

0.000

OR left axis, deg, mean ± SE

118.22 ± 10.9

91.53 ± 1.49

105.14 ± 4.72

F = 11.434

0.000

Left keratometry power flat curve, D, mean ± SE

43.95 ± 0.44

43.31 ± 0.04

43.77 ± 0.2

F = 7.945

0.000

Left keratometry power steep curve, D, mean ± SE

46.52 ± 0.46

44.18 ± 0.05

45.05 ± 0.2

F = 59.350

0.000

Lutein + zeaxanthin, mcg, mean ± SE

2477.43 ± 306.63

2178.89 ± 64.99

2205.13 ± 176.4

F = 0.577

0.562

Vitamin A, µg, mean ± SE

1058.4 ± 63.4

1139.38 ± 18.3

1169.65 ± 89.87

F = 0.596

0.551

Vitamin C, mg, mean ± SE

232.19 ± 22.07

255.64 ± 7.3

241.65 ± 15.06

F = 0.531

0.588

Vitamin E as alpha-tocopherol, mg, mean ± SE

13.27 ± 0.71

12.97 ± 0.16

12.92 ± 0.42

F = 0.108

0.898

Energy intake, kcal, mean ± SE

3828.45 ± 123.22

4004.82 ± 33.43

3911.28 ± 80.17

F = 1.239

0.290

Protein intake, g, mean ± SE

143.76 ± 4.9

153.65 ± 1.37

147.38 ± 3.08

F = 2.773

0.063

Carbohydrate, g, mean ± SE

481.71 ± 16.41

495.57 ± 4.28

487.92 ± 11.04

F = 0.472

0.624

Total fat intake, g, mean ± SE

141.88 ± 5.24

150.14 ± 1.49

148.03 ± 3.45

F = 0.979

0.376

Zinc, mg, mean ± SE

21.19 ± 0.78

21.99 ± 0.24

22.07 ± 0.92

F = 0.295

0.744

Magnesium, mg, mean ± SE

499.21 ± 17.83

512.7 ± 4.69

494.85 ± 10.86

F = 1.169

0.311

Selenium, µg, mean ± SE

194.6 ± 7.17

207.45 ± 1.97

199.66 ± 4.65

F = 2.131

0.119

Copper, mg, mean ± SE

2.28 ± 0.09

2.33 ± 0.02

2.37 ± 0.1

F = 0.258

0.772

  1. SE, standard error; PIR, poverty income ratio; OR, Objective Refraction; χ2, chi-square test; F, analysis of variance.