Baseline demographics
| Characteristic | Ketotifen (n = 172) | Placebo (n = 173) | Levocabastine (n = 174) |
|---|---|---|---|
| Sex, No (%) | |||
| Male | 95 (55.2) | 82 (47.4) | 88 (50.6) |
| Female | 77 (44.8) | 91 (52.6) | 86 (49.4) |
| Ethnic origin, No (%) | |||
| European | 149 (86.6) | 153 (88.4) | 155 (89.1) |
| Pacific Islander | 3 (1.7) | 2 (1.2) | 2 (1.1) |
| Aboriginal | 1 (0.6) | 0 (0.0) | 1 (0.6) |
| Asian | 10 (5.8) | 6 (3.5) | 5 (2.9) |
| South East Asian | 5 (2.9) | 4 (2.3) | 7 (4.0) |
| Oriental | 1 (0.6) | 2 (1.2) | 5 (1.0) |
| Other | 3 (1.7) | 6 (3.5) | 2 (1.1) |
| Iris colour, No (%) | |||
| Brown/hazel | 77 (44.8) | 71 (41.0) | 74 (42.5) |
| Green | 23 (13.5) | 17 (9.8) | 16 (9.2) |
| Blue | 46 (26.9) | 67 (38.7) | 67 (38.5) |
| Grey | 12 (7.0) | 13 (7.5) | 9 (5.2) |
| Other | 13 (7.6) | 5 (2.9) | 8 (4.6) |
| Mean age (SD) (years) | 46.3 (17.0) | 47.9 (16.5) | 49.5 (17.4) |