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| Myopia trend analysis of primary and secondary school students in a province based on partial connection number |
| Chen Wei1, Zhao Keqin2 |
1 Ophthalmology Department, Zhuji Hospital of Traditional Chinese Medicine, Zhuji 311800, China;
2 Zhuji Institute of Connection Mathematics, Zhuji 311800, China |
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Abstract Objective To explore the application of partial connection coefficient in the analysis of myopia trend of primary and middle school students, to provide decision support for prevention and control of myopia for primary and middle school students. Methods Firstly, the rates of mild myopia, moderate myopia and high myopia in each age group of primary and secondary school students were converted into the ternary association number of homonyms and differences against myopia with the mild myopia rate as the reference, and the second-order total partial association number of homonyms and differences against myopia in each age group was calculated. Results The myopia of 6 to 9 years old students shows a decreasing trend, while the myopia of 10-18 years old students showed a slow increasing trend, with the increasing rate 1.8%-6.5%; the aggravating rate of girls in the 10-year-old group was 3.4%, 1.89 times higher than that of boys; there was no significant difference in the aggravating trend of myopia between boys and girls aged 11 to 15, the trend of myopia exacerbation in boys from 16 to 18 years old was significantly higher than that in girls, and the key stage of myopia prevention and control for boys and girls was from 10 to 13 years old. Conclusion The partial connection coefficient can be used in the analysis of myopia trend of primary and middle school students, and the implementation of "double reduction" measures is the premise to slow down the trend of myopia in primary and secondary school students.
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Received: 08 October 2021
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