Table 4 Prevalence of myopia by different criteria
From: Refractive errors and risk factors for myopia in infants aged 1–18 months in Tianjin, China
Parameter | Myopia categories | |
|---|---|---|
(SE at least −0.50 D) | (SE at least −1.00 D) | |
Age in months | n (%) | n (%) |
P | 0.129 | 0.793 |
1–3 | 4 (2.9%) | 4 (2.9%) |
3–6 | 4 (2.8%) | 2 (1.4%) |
6–9 | 12 (7.7%) | 6 (3.8%) |
9–12 | 4 (4.1%) | 2 (2.7%) |
12–18 | 6 (8.5%) | 2 (2.8%) |
Total | 30 (5.1%) | 16 (2.7%) |
Gender | ||
P | 0.035 | 0.029 |
Boys | 10 (3.2%) | 4 (1.3%) |
Girls | 20 (7.0%) | 12 (4.4%) |