Table 2. The pooled effect size of factors of visual impairment among children in Ethiopia, 2021.
| No. | Variable (Reference) | Number of studies | Effect size (95% CI) | Number of studies | Heterogeneity | ||
|---|---|---|---|---|---|---|---|
| Q-value | P-value | I2 | |||||
| 1 | Sex (female) | 6 | 0.642 (0.357–1.156) | 6 | 0.81 | 0.976 | 61.0% |
| 2 | Age 10–13 (6–9) | 2 | 0.224 (0.046–1.102) | 2 | 0.25 | 0.616 | 80.1% |
| 3 | Age 14–18 (6–9) | 2 | 0.508 (0.102–2.534) | 2 | 0.05 | 0.828 | 80.1% |
| 4 | Illiterate parents (College and above) | 3 | 0.668 (0.023–19.597) | 3 | 0.06 | 0.970 | 72.9% |
| 5 | Parents with visual impairment (no visual impairment) | 2 | 1.820 (0.381–8.698) | 2 | 0.00 | 0.957 | 80.1% |