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Table 3 Distribution of myopia and high myopia in different educational levels

From: Design, methodology, and baseline of whole city-million scale children and adolescents myopia survey (CAMS) in Wenzhou, China

Education phase Grade Count SE, Mean (SD) (D) Likely myopia (95% CI) Myopia (95% CI) High myopia (95% CI)
Elementary school 1 104,727 − 0.13 (0.97) 5.82% (5.68%–5.96%) 12.77% (12.57%–12.98%) 0.18% (0.16%–0.21%)
2 98,456 − 0.39 (1.11) 7.54% (7.38%–7.71%) 21.34% (21.08%–21.59%) 0.26% (0.23%–0.29%)
3 95,606 − 0.72 (1.29) 9.20% (9.02%–9.38%) 32.89% (32.59%–33.19%) 0.40% (0.36%–0.44%)
4 96,269 − 1.10 (1.48) 9.63% (9.45%–9.82%) 44.64% (44.32%–44.95%) 0.87% (0.81%–0.93%)
5 94,529 − 1.52 (1.66) 9.43% (9.24%–9.61%) 56.65% (56.34%–56.97%) 1.45% (1.38%–1.53%)
6 91,022 − 1.91 (1.83) 8.27% (8.09%–8.45%) 65.03% (64.72%–65.34%) 2.72% (2.61%–2.83%)
Total 580,609 − 0.94 (1.54) 8.27% (8.20%–8.34%) 38.16% (38.03%–38.28%) 0.95% (0.93%–0.98%)
Middle school 7 87,817 − 2.40 (1.99) 7.07% (6.90%–7.24%) 74.30% (74.01%–74.59%) 4.91% (4.77%–5.05%)
8 86,165 − 2.75 (2.11) 5.85% (5.69%–6.00%) 78.21% (77.93%–78.48%) 7.09% (6.92%–7.26%)
9 77,068 − 2.99 (2.20) 4.77% (4.62%–4.92%) 80.42% (80.14%–80.70%) 8.97% (8.76%–9.17%)
Total 251,050 − 2.70 (2.11) 5.94% (5.85%–6.04%) 77.52% (77.36%–77.68%) 6.90% (6.80%–7.00%)
High school 10 61,714 − 3.26 (2.30) 4.32% (4.16%–4.49%) 82.76% (82.47%–83.06%) 11.39% (11.14%–11.64%)
11 59,858 − 3.46 (2.32) 3.97% (3.82%–4.13%) 84.48% (84.19%–84.77%) 13.45% (13.17%–13.72%)
12 49,395 − 3.51 (2.38) 3.74% (3.58%–3.91%) 84.98% (84.66%–85.29%) 14.40% (14.09%–14.71%)
Total 170,967 − 3.40 (2.33) 4.03% (3.94%–4.13%) 84.00% (83.83%–84.18%) 12.98% (12.82%–13.14%)
  1. SE spherical equivalent; SD standard deviation; CI confidence interval