Placebo (n = 166) | Grass AIT (n = 163) | |
---|---|---|
Female, no. (%) | 88 (53%) | 88 (54%) |
Race, no. (%) | ||
White | 134 (81%) | 134 (82%) |
Black | 21 (13%) | 21 (13%) |
Hispanic/Latino | 6 (4%) | 4 (2%) |
Non-smoker | 121 (73%) | 128 (79%) |
Previous smoker, no. (%) | 24 (14%) | 26 (16%) |
Smoker, no. (%) | 21 (13%) | 9 (6%) |
Age, y | ||
Mean (SD) | 35.9 (11.7) | 35.9 (11.7) |
Range | 18-62 | 18-65 |
Subjects with asthma, no. (%) | 43 (26%) | 46 (28%) |
Sensitive to non-grass allergens per skin prick, no. (%) | ||
White oak | 74 (45%) | 75 (46%) |
White birch | 84 (51%) | 87 (53%) |
Animal hair/dander (cat) | 77 (46%) | 79 (48%) |
House dust mite | 86 (52%) | 93 (57%) |
Mean duration of pre-treatment (weeks), [range] | 16.2 [5.9, 23.9] | 16.3 [6.4, 23.7] |