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Table 4 Effect of potential explanatory factors on the excess prevalence of myopia in grade 7 sample compared with grade 1 sample

From: Low prevalence of myopia among school children in rural China

Model

Myopia(SE < −0.5 D)

OR

95% CI

P

% Reduction excess prevalence

1

18.22

13.74–24.16

< 0.001

Reference model

2

19.93

14.94–26.58

< 0.001

−9.9

3

17.96

13.51–23.88

< 0.001

15.1

4

12.47

7.39–21.05

< 0.001

33.4

5

19.09

14.27–25.55

0.012

−5.1

6

15.54

8.73–27.66

< 0.001

34.7

  1. Model 1:sex; model 2:sex and parental myopia; model 3:sex and reading and writing per day after school; model 4: sex and time outdoors per day; model 5:sex and playing games or using computer; model 6:sex, parental myopia, reading and writing per day after school, time outdoors per day, playing games or using computer
  2. OR odds ratio, CI confidence interval
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BMC Ophthalmology

ISSN: 1471-2415

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