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The frequency of visual impairment (VA ≤ 6/12) by sex and schools.
| Primary schools | |||||
|---|---|---|---|---|---|
| Holy Trinity Cathedral (n = 22) | Zeray Deres (n = 22) | Total (n = 22) | % (n = 378) | ||
| Sex | F | 8 (36.4%) | 4 (18.2%) | 12 (54.5%) | 3.2 |
| M | 6 (27.3%) | 4 (18.2%) | 10 (45.5%) | 2.6 | |
| Total | 14 (63.7%) | 8 (36.4%) | 22 (100.0%) | 5.8 | |
| Age | 5–8 | 5 (22.7%) | 1 (4.5%) | 6 (27.3%) | 1.6 |
| 9–12 | 6 (27.3%) | 3 (13.6%) | 9 (40.9%) | 2.4 | |
| 13–16 | 3 (13.6%) | 4 (18.2%) | 7 (31.8%) | 1.9 | |
| Total | 14 (63.7%) | 8 (36.4%) | 22 (100%) | 5.8 | |
