Table 4 Student myopia occurrence time among different parental myopia statuses
father | mother | both myopic | both non-myopic | |||||
|---|---|---|---|---|---|---|---|---|
Occurrence time | n | % | n | % | n | % | n | % |
Kindergarten | 5 | 0.82 | 2 | 0.38 | 2 | 0.90 | 45 | 0.70 |
Primary school | 88 | 14.43 | 70 | 13.26 | 81 | 36.65 | 448 | 6.94 |
Middle school | 501 | 82.13 | 437 | 82.77 | 129 | 58.37 | 5041 | 78.09 |
University | 16 | 2.62 | 19 | 3.60 | 9 | 4.07 | 921 | 14.27 |
total | 610 | 100.00 | 528 | 100.00 | 221 | 100.00 | 6455 | 100.00 |