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Associations between the myopia group and related factors: male gender, parental myopia, senior group, 3–7 days per week participating in outdoor activities during the semester (outdoors 3–7 d/w), a late daily wake time during the semester (wake time after 6 am), and a late bedtime during holidays. OR: odds ratio; CI: confidence interval. ∗Statistical significance (p < 0.05).
