Ireland Eye Study principal demographic study variables
| Demographic variables | 6–7 years, n (%) | 12–13 years, n (%) |
| Gender | ||
| Male | 377 (51.8) | 504 (56.1) |
| Female | 351 (48.2) | 394 (43.9) |
| Living environment | ||
| Urban | 368 (50.5) | 751 (83.6) |
| Rural | 360 (49.5) | 147 (16.4) |
| Socioeconomic status | ||
| DEIS | 245 (33.7) | 108 (12.0) |
| Non-DEIS | 483 (66.3) | 790 (88.0) |
| Ethnicity | ||
| White | 582 (79.9) | 708 (78.8) |
| Traveller | 65 (8.9) | 86 (9.6) |
| South Asian | 22 (3.0) | 15 (1.7) |
| East Asian | 21 (2.9) | 30 (3.3) |
| Black | 31 (4.3) | 49 (5.5) |
| Arab | 7 (1.0) | 10 (1.1) |
| Non-white | ||
| South Asian, East Asian, black and Arab combined | 81 (11.2) | 104 (11.6) |
DEIS, Delivering Equality of opportunity In School.