Combination Effect of Outdoor Activity and Screen Exposure on Risk of Preschool Myopia: Findings From Longhua Child Cohort Study.

Front Public Health · 2021 · PMC7973103 · PMID 33748061

Europe PMC DOI

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failed to reach statistical significanceno p-value reported

There might be many factors involved in why some measures that might be expected to be associated with myopia failed to reach statistical significance.

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