From: Prevalence of myopia and vision impairment in school students in Eastern China
Demographics | N | Mean Spherical equivalent in diopter (SE) | P-value |
---|---|---|---|
Grade | < 0.0001 | ||
Kindergarten | 381 | 0.03 (0.11) | |
Grade 1 | 331 | −0.23 (0.12) | |
Grade 2 | 366 | −0.54 (0.11) | |
Grade 3 | 371 | − 0.94 (0.11) | |
Grade 4 | 367 | −1.39 (0.12) | |
Grade 5 | 376 | −2.00 (0.11) | |
Grade 6 | 368 | − 2.32 (0.11) | |
Grade 7 | 376 | −2.71 (0.12) | |
Grade 8 | 360 | −3.11 (0.12) | |
Grade 9 | 346 | −3.52 (0.12) | |
Grade 10 | 383 | −4.24 (0.10) | |
Grade 11 | 373 | −4.41 (0.10) | |
Grade 12 | 403 | −4.31 (0.10) | |
Gender | 0.02 | ||
Male | 2647 | −2.22 (0.06) | |
Female | 2154 | −2.35 (0.06) | |
School location | 0.004 | ||
Urban | 2691 | −2.37 (0.05) | |
Rural | 2110 | −2.19 (0.07) | |
School workload | < 0.0001 | ||
Low | 303 | −1.58 (0.13) | |
Moderate | 3841 | −2.56 (0.03) | |
High | 657 | −2.71 (0.09) |