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. 2021 Oct 11;19(4):15593258211042161. doi: 10.1177/15593258211042161

Table 3.

Sleep Duration Classified Associations Between Screen Time and Poor Uncorrected Visual Acuity.

Screen time(hours) Short sleep Medium sleep Long sleep
Crude OR (95% CI) Adjusted a OR (95% CI) Crude OR (95% CI) Adjusted a OR (95% CI) Crude OR (95% CI) Adjusted a OR (95% CI)
<1 Ref Ref Ref Ref Ref Ref
1–2 1.69(1.28–2.23)** 1.68(1.26–2.21)** 1.03(.83–1.26) 1.03(.81–1.24) 1.12(.71–1.78) 1.29(.92–1.79)
>=2 2.18(1.46–3.24)** 2.07(1.47–2.91)** 1.32(1.13–1.55)** 1.20(1.03–1.40)** 1.66(1.25–2.21)** 1.49(1.11–1.99)**

aAdjusted for gender, residence, mode of delivery, frequency of vigorous physical activity, BMI, residence in school, attending an after-school tutorial program, smoking.

**P < .001.