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Analysis of the effect of homework time on myopia in grade 4-6 pupils, Sichuan Province
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Liang ZHOU1, Yang LI1, Fu-yan ZHANG2, Chun-li SHI1, Hong-bin ZHU1
Modern Preventive Medicine | 2024, 51(18) : 3338 - 3345
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Modern Preventive Medicine | 2024, 51(18): 3338-3345
Analysis of the effect of homework time on myopia in grade 4-6 pupils, Sichuan Province
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Liang ZHOU1, Yang LI1, Fu-yan ZHANG2, Chun-li SHI1, Hong-bin ZHU1
Affiliations
  • Center for Disease Control and Prevention for Sichuan, Chengdu, Sichuan 610041, China
Published: 2024-09-25 doi: 10.20043/j.cnki.MPM.202404315
Outline
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Objective

To explore the effect of homework time on myopia of primary school students and evaluate its differences among different grades.

Methods

A total of 183 districts in 21 cities of Sichuan Province were selected as research sites. Two primary schools were randomly selected from each research site, and students in grades 4-6 were selected form the whole class basis. At least 80 students from each school were selected for visual screening and questionnaire survey. Logistic regression analysis was used to analyze the effect of homework duration on myopia.

Results

47 054 students from grades 4 to 6 were included in the study, including 32.5% in grade 4, 33.4% in grade 5 and 34.0% in grade 6. The myopia rate of students in grades 4-6 was 50.3%, and it increased with the increase of grade. After controlling covariates, the average daily homework time<1 h was taken as reference, and the homework time of 1-2 hours was the risk factor for myopia (OR=1.059, P=0.008). Stratified by sex, the same effect was observed in male students (OR=1.102, P=0.001), and was most pronounced in male students in grade 5 (OR=1.123, P=0.026). The same effect was observed among students with good economic level (OR=1.097, P=0.005).

Conclusion

Homework may increase the risk of myopia of primary school students. It is suggested to arrange homework time scientifically and reasonably.

Primary school students  /  Homework  /  Myopia
Liang ZHOU, Yang LI, Fu-yan ZHANG, Chun-li SHI, Hong-bin ZHU. Analysis of the effect of homework time on myopia in grade 4-6 pupils, Sichuan Province[J]. Modern Preventive Medicine, 2024 , 51 (18) : 3338 -3345 . DOI: 10.20043/j.cnki.MPM.202404315
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Year 2024 volume 51 Issue 18
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doi: 10.20043/j.cnki.MPM.202404315
  • Receive Date：2024-04-18
  • Online Date：2026-03-20
  • Published：2024-09-25
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  • Received：2024-04-18
Affiliations
    Center for Disease Control and Prevention for Sichuan, Chengdu, Sichuan 610041, China
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