OBJECTIVE: To evaluate factors associated with myopic shift among primary school @entity1 . METHODS: In a one-year prospective school-based study, 5052 @entity1 from ten schools were enrolled using a multi-stage random cluster approach. The baseline examination included non-cycloplegic auto-refractometry and questionnaire interview. Measurements were repeated at the follow-up. RESULTS: Among 5052 students at baseline investigated, 4292 students (85.0%) returned for the follow-up examination. The mean refractive error (-1.13  1.57 diopters) had changed -0.52  0.73 diopters from the baseline to the follow-up examination. 2170 (51.0%) had a rate of significant myopic shift (significant myopic shift is defined as the change of spherical equivalent of the refraction  <= -0.50D between the follow-up and baseline measures). We confirmed that common associated factors (older age, parental @entity1714 , lower refractive status at baseline, shorter reading distance and lower frequency of outdoor activities during class recesses) were associated with greater shift towards @entity1714 . After controlling for age, sex, region of habitation, parental @entity1714 and refractive status at baseline, greater shift towards @entity1714 was independently associated with distance from near-work (OR=1.48 , 95% CI=1.26-1.74, P<0.001) and longer time outdoors for leisure (OR=0.87, 95% CI=0.78-0.97, P<0.013). CONCLUSION: Greater shift towards @entity1714 was independently associated with modifiable factors (distance from near-work and longer time outdoors for leisure) might suggest that encouraging @entity1 to go outside for outdoor activities during class recess and after school may be a promising and feasible intervention against @entity1714 development.

Risk Factors of Myopic Shift among Primary School XXXX in Beijing, China: A Prospective Study.

@entity1 :: ('9606', 'Species') :: ['children'] @entity1714 :: ('MESH:D009216', 'Disease') :: ['myopia']
@entity1 :: (9606,Species) :: ['Children']
