Table 2.
General characteristics of subjects with or without allergic conjunctivitis.
| Allergic conjunctivitis (−) | Allergic conjunctivitis (+) | P value | ||
|---|---|---|---|---|
| n = 700 | n = 273 | |||
| Age | 9.2 ± 1.7 | 9.2 ± 1.7 | 0.851 | |
| Cylindrical diopter | 0.63 ± 0.54 (0–4.8) | 0.71 ± 0.63 (0–4.8) | 0.051 | |
| Spherical equivalent | −0.60 ± 1.46 (−7.5–4.5) | −0.75 ± 1.57 (−6.0–2.5) | 0.150 | |
| Sex | Male | 357 (50.9%) | 158 (57.7%) | 0.056 |
| Female | 345 (49.1%) | 116 (42.3%) | ||
| School location | Suburb | 325 (46.3%) | 101 (36.9%) | 0.008 |
| Urban | 377 (53.7%) | 173 (63.1%) | ||
| History of asthma | No | 672 (95.7%) | 262 (95.6%) | 0.942 |
| Yes | 30 (4.3%) | 12 (4.4%) | ||
| History of allergic rhinitis | No | 466 (66.2%) | 95 (34.3%) | <0.001 |
| Yes | 237 (33.8%) | 179 (65.3%) | ||
| History of atopic dermatitis | No | 546 (77.8%) | 192 (70.1%) | 0.012 |
| Yes | 156 (22.2%) | 82 (29.9%) | ||
| History of food allergy | No | 658 (93.7%) | 234 (85.4%) | <0.001 |
| Yes | 44 (6.3) | 40 (14.6%) | ||
| History of pollen allergy | No | 680 (97.0%) | 236 (86.1%) | <0.001 |
| Yes | 21 (3.0%) | 38 (13.9%) | ||
| Father history of allergy | No | 637 (91.0%) | 234 (85.7%) | 0.016 |
| Yes | 63 (9.0%) | 39 (14.3%) | ||
| Mother history of allergy | No | 569 (81.3%) | 198 (72.8%) | 0.004 |
| Yes | 131 (18.7%) | 74 (27.2%) | ||
| Sibling history of allergy | No | 639 (94.7%) | 238 (90.2%) | 0.012 |
| Yes | 36 (5.3%) | 26 (9.8%) | ||
| Low birth weight | No | 667 (95.2%) | 262 (95.6%) | 0.802 |
| Yes | 33 (4.8%) | 12 (4.4%) | ||
| Passive smoking | No | 627 (89.4%) | 239 (87.2%) | 0.323 |
| Yes | 74 (10.6%) | 35 (12.8%) | ||