Table 1.
Distribution of myopia in children in mainland China
| Characteristic | n (%) | Myopia | P value | |
|---|---|---|---|---|
| n | % | |||
| Age (Mean ± SD) | 11.45 ± 2.65 | |||
| Sex | 0.000 | |||
| Boys | 22 225 (50.8) | 6542 | 29.4 | |
| Girls | 21 546 (49.2) | 7386 | 34.3 | |
| Ethnicity | 0.000 | |||
| Han-ethnicity | 37 951 (86.7) | 12662 | 33.4 | |
| Others | 5820 (13.3) | 1266 | 21.8 | |
| Living place | 0.000 | |||
| Rural area | 21 964 (50.2) | 5641 | 25.7 | |
| Urban area | 21 807 (49.8) | 8287 | 38.0 | |
| Father’s education | 0.000 | |||
| Primary school and lower | 6644 (15.2) | 1742 | 26.2 | |
| Junior high school | 16832 (38.5) | 4979 | 29.6 | |
| Senior high school | 10478 (23.9) | 3612 | 34.5 | |
| Some college and higher | 9817 (22.4) | 3595 | 36.6 | |
| Mother’s education | 0.000 | |||
| Primary school and lower | 9109 (20.8) | 2452 | 26.9 | |
| Junior high school | 16141 (36.9) | 4940 | 30.6 | |
| Senior high school | 9648 (22.0) | 3385 | 35.1 | |
| Some college and higher | 8873 (20.3) | 3151 | 35.5 | |