Table 2 Association between myopia and serum vitamin A

aOR

95% CI

P-value

aOR

95% CI

P-value

Age

1.01

0.98–1.04

0.53

1.02

0.94–1.10

0.65

Gender (Female vs. male)

1.18

1.02–1.36

0.027

1.71

1.25–2.33

0.001

Education attainment

(per each category increment)

1.13

1.04–1.23

0.004

1.34

1.09–1.65

0.006

TV and computer usage > 2 h/day

1.07

0.91–1.26

0.42

1.07

0.72–1.58

0.73

MET scores

(per 1 quarter increment)

0.9

0.82–0.98

0.015

0.85

0.70–1.04

0.12

Vitamin A (per 1 µmol/L increment)

1.01

0.83–1.24

0.88

1.46

1.01–2.10

0.045

Vitamin D (per 10 nmol/L increment)

0.96

0.91–1.02

0.16

0.90

0.83–0.98

0.012