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Table 1 Characteristics of the included and excluded children

From: Near work, outdoor activity, and myopia in children in rural China: the Handan offspring myopia study

 

Included (N = 572)

Excluded (N = 306)

P

Age (years)

10.6 ± 2.5

10.5 ± 2.5

0.44

Gender (boys:girls)

316:256

146:160

0.03

Prevalence of myopia (%)a

   

 Boys

17.1

17.2

0.86

 Girls

32.8

27.3

0.12

 Total

24.1

22.6

0.65

Spherical equivalent (D)a

 Boys

0.15 ± 1.18

0.19 ± 1.44

0.81

 Girls

−0.17 ± 1.27

−0.24 ± 1.75

0.65

 Total

0.01 ± 1.23

−0.05 ± 1.63

0.63

  1. aRefractive error data were missing in 24 boys and 17 girls in the excluded group
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BMC Ophthalmology

ISSN: 1471-2415

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