Table 2 Prevalence rate and categories of myopia
Variables | Myopia (%; 95% CI) | Myopia categories n (%) | ||
|---|---|---|---|---|
Low | Moderate | High | ||
Total | 33.9; 31.0–36.8 | 258 (76.3) | 73 (21.6) | 7 (2.1) |
School region | ||||
Rural | 30.1; 27.2–33.1 | 104 (80.6) | 23 (17.8) | 2 (1.6) |
Urban | 36.7; 33.8–39.7 | 154 (73.7) | 50 (23.9) | 5 (2.4) |
Gender | ||||
Male | 30.0; 27.1–33.0 | 120 (76.4) | 35 (22.3) | 2 (1.3) |
Female | 38.2; 35.2–41.1 | 138 (76.2) | 38 (21.0) | 5 (2.8) |
Age (years) | ||||
7 | 9.9; 5.0–14.9 | 14 (100) | 0 (0) | 0 (0) |
8 | 9.6; 4.7–14.6 | 12 (92.3) | 1 (7.7) | 0 (0) |
9 | 24.8; 18.0–31.7 | 30 (78.9) | 6 (15.8) | 2 (5.3) |
10 | 40.2; 33.0–47.4 | 58 (80.6) | 13 (18.1) | 1 (1.3) |
11 | 52.8; 45.8–59.8 | 70 (68.0) | 31 (30.1) | 2 (1.9) |
12 | 48.8; 41.4–56.3 | 62 (73.8) | 20 (23.8) | 2 (2.4) |
13 | 63.6; 43.5–83.7 | 12 (85.7) | 2 (14.3) | 0 (0) |