Table 1.

Demographics

	Patients (n = 387)
Age, years (mean, SD)	35.89 (± 10.45)
Gender (n (%))
Female	234 (60.5)
Male	153 (39.5)
Smokers (n (%))
Non	221 (57.1)
Ex	79 (20.4)
Current	87 (22.5)
Pets (n (%))
Yes	156 (40.3)
Formerly, but not at present	36 (9.3)
No	195 (50.4)
sIgE by ImmunoCAP, positive to (n (%))
Grass pollen	262 (67.7)
House dust mite	187 (48.3)
Birch pollen	252 (65.1)
Mugwort pollen	131 (33.9)
Positive clinical history of allergy to (n (%))
Grass pollen	237 (61.2)
House dust mite	132 (34.1)
Birch pollen	213 (55.0)
Mugwort pollen	114 (29.5)
Clinical symptoms of allergic (n (%))
Rhinitis	365 (94.3)
Conjunctivitis	341 (88.1)
Cough/sibilant bronchi	94 (24.3)
Asthma	58 (15.0)
Dermatitis	20 (5.2)
Positive skin prick test result, < 12 months ago to (n (%))
Grass pollen	290 (74.9)
House dust mite	223 (57.6)
Birch pollen	275 (71.1)
Mugwort pollen	192 (49.6)
Positive family history of relevant allergies, atopic eczema or food intolerance in (n (%)
Father	61 (15.8)
Mother	93 (24.0)