Table 4 Annual refractive change in children from grade 1 to 3 in Hubei Province
Annual SE change in 2020 | Annual SE change in 2021 | t | P | ||
|---|---|---|---|---|---|
All | -0.68 (-0.79, -0.57) | -0.65 (-0.78, -0.53) | 7.96 | < 0.001 | |
Grade 1 (7 ~ 8 y) | Total | -0.65 (-0.74, -0.63) | -0.61 (-0.69, -0.46) | 17.85 | < 0.001 |
Male | -0.59 (-0.65, -0.51) | -0.51 (-0.64, -0.43) | 8.41 | < 0.001 | |
Female | -0.70 (-0.79, -0.63) | -0.64 (-0.71, -0.55) | 7.39 | 0.005 | |
Grade 2 (8 ~ 9 y) | Total | -0.61 (-0.73, -0.59) | -0.58 (-0.62, -0.38) | 14.58 | < 0.001 |
Male | -0.57 (-0.64, -0.51) | -0.52 (-0.63, -0.47) | 11.32 | < 0.001 | |
Female | -0.68 (-0.74, -0.52) | -0.63 (-0.69, -0.58) | 13.39 | < 0.001 | |
Grade 3 (9 ~ 10 y) | Total | -0.59 (-0.64, -0.51) | -0.60 (-0.67, -0.44) | 21.27 | < 0.001 |
Male | -0.52 (-0.65, -0.47) | -0.51 (-0.62, -0.48) | 12.74 | < 0.001 | |
Female | -0.65 (-0.74, -0.57) | -0.67 (-0.75, -0.61) | 15.95 | < 0.001 |