Journal of Ophthalmology / 2018 / Article / Tab 4

Research Article

Prevalence and Related Factors for Myopia in School-Aged Children in Qingdao

Table 4

Near work and outdoor activity time (hours per day) of the students.

Age (years)nNear work (h/d)Outdoor activity (h/d)
(Mean ± SD)(Mean ± SD)

105623.32 ± 1.322.28 ± 1.21
115593.42 ± 1.562.24 ± 1.26
125363.41 ± 1.822.06 ± 1.32
135613.78 ± 1.421.88 ± 1.12
147524.32 ± 1.841.64 ± 1.14
157834.62 ± 1.261.42 ± 0.96
value