Table 1. Subjects demographics.
| Variable | Group | N | (%) | N | (%) |
|---|---|---|---|---|---|
| Myopia | Myopic | 27,752 | (30.3%) | ||
| Non-myopic | 63,840 | (69.7%) | |||
|
| |||||
| High myopia | Highly myopic | 3,586 | (5.3%) | ||
| Non-myopic | 63,840 | (94.7%) | |||
|
| |||||
| Sex | Male | 42,039 | (45.9%) | ||
| Female | 49,553 | (54.1%) | |||
|
| |||||
| Ethnicity | White | 91,592 | (100.0%) | ||
|
| |||||
| Birth order | 1 | 43,009 | (47.0%) | ||
| 2 | 27,779 | (30.3%) | |||
| 3 | 11,663 | (12.7%) | |||
| 4+ | 9,141 | (10.0%) | |||
|
| |||||
| Highest qualification | University degree | 32,048 | (35.0%) | ||
| A-levels or similar* | 21,226 | (23.2%) | |||
| O-levels or CSEs | 24,774 | (27.0%) | |||
| None | 13,544 | (14.8%) | |||
|
| |||||
| Febrile illness | Age-at-onset | Any age | Prior to 17 yrs | ||
|
|
|||||
| Pneumonia | 993 | (1.1%) | 400 | (0.4%) | |
| Encephalitis | 54 | (0.1%) | 10 | (0.0%) | |
| Meningitis | 303 | (0.3%) | 142 | (0.2%) | |
| Rheumatic fever | 206 | (0.2%) | 183 | (0.2%) | |
| Measles | 657 | (0.7%) | 649 | (0.7%) | |
| Rubella | 230 | (0.3%) | 196 | (0.2%) | |
| Mumps | 418 | (0.5%) | 371 | (0.4%) | |
| Diphtheria | 32 | (0.0%) | 31 | (0.0%) | |
| Pertussis | 207 | (0.2%) | 193 | (0.2%) | |
*
Includes: NVQ, HND, HNC and other professional qualifications.