Research Article
Prevalence and Related Factors for Myopia in School-Aged Children in Qingdao
Table 5
Associations between myopia and possible risk factors.
| Variables | Univariate analysis | Multivariate analysis | Odds ratio | 95% CI | P | Odds ratio | 95% CI | P |
| Age | 1.43 | 1.34–1.52 | 0.012 | 1.23 | 1.18–1.27 | <0.001 | Sex | Boys | 1 | | | 1 | | | Girls | 1.64 | 0.48–2.21 | 0.14 | 1.68 | 0.42–1.92 | 0.12 | Parental myopia | None | 1 | | | 1 | | | One myopic | 1.47 | 1.24–1.96 | 0.01 | 1.62 | 0.71–2.34 | 0.12 | Two myopic | 2.32 | 1.72–3.28 | <0.001 | 2.58 | 1.76–3.46 | <0.001 | Near work distance (cm) | >30 | 1 | | | 1 | | | 20–30 | 1.27 | 1.02–1.54 | <0.001 | 1.12 | 0.69–1.38 | 0.23 | 10–20 | 2.46 | 1.52–4.76 | <0.001 | 1.76 | 0.49–2.74 | 0.18 | 0–10 | 1.29 | 1.08–1.54 | 0.04 | 1.21 | 0.84–1.41 | 0.32 | Trend test | | | 0.16 | | | 0.21 | Near work time (h/d) | 1.28 | 1.04–1.86 | <0.001 | 1.42 | 0.79–2.04 | 0.16 | Outdoor activity time (h/d) | 0.67 | 0.46–0.78 | 0.03 | 0.74 | 0.53–0.92 | <0.001 | 5 min rest after continuous near work time (min) | 0–15 | 1 | | | 1 | | | 15–30 | 0.94 | 0.72–1.12 | 0.24 | 1.02 | 0.92–1.08 | 0.12 | 30–45 | 1.19 | 1.02–1.31 | 0.02 | 1.24 | 1.14–1.32 | <0.001 | 45–60 | 1.36 | 1.12–1.49 | <0.001 | 1.34 | 1.28–1.38 | 0.03 | >60 | 2.12 | 1.76–2.72 | <0.001 | 2.48 | 1.92–3.24 | <0.001 | Trend test | | | <0.001 | | | <0.001 |
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indicates a significant statistical significance ().
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