Resident n = 457 | Migrant n = 313 | Chi-square/t value | P Value | ||
---|---|---|---|---|---|
Grade, No (%) | 1 | 227 (49.7) | 159 (50.8) | 0.0944 | 0.7587 |
2 | 230 (50.3) | 154 (49.2) | |||
Gender, No (%) | male | 233 (51.0) | 184 (58.8) | 4.5538 | 0.0328 |
female | 224 (49.0) | 129 (41.2) | |||
Age, years (SD) | 7.54 (0.75) | 7.89 (0.88) | 5.926 | < 0.0001 | |
Parental Myopia, No (%) | 0 | 123 (26.9) | 201 (64.2) | 107.9569 | < 0.0001 |
> = 1 | 87 (19.0) | 21 (6.7) | |||
unknown | 247 (54.1) | 91 (29.1) | |||
Prevalence of Myopia, No (%) | 51 (11.2) | 25 (8.0) | 2.1018 | 0.1471 | |
SE, Mean (95% CI), D | 0.59 (0.50–0.68) | 0.46 (0.35–0.57) | 1.89 | 0.0588 | |
AL, Mean (95% CI), mm | 22.97 (22.90–23.04) | 22.94 (22.85–23.02) | 0.62 | 0.5352 |