Rate of positive tests [% (n/patients)]
	Bermuda grass	Timothy grass	Humulus scandens
Patients with AR and/or AS	22.5% (58/258) ††‡	13.6% (35/258) †	7.0% (18/258)
Patients with AR	21.8% (17/78) ††	10.2% (8/78)	7.7% (6/78)
Patients with AS	22.8% (21/92) ††	14.1% (13/92) †	5.4% (5/92)
Patients with AR and AS	22.7% (20/88) ††	15.9% (14/88)	8.0% (7/88)
Age
<14 years or younger	18.6% (8/43)	14.0% (6/43)	7.0% (3/43)
> 4 years	23.3% (50/215)	13.5% (29/215)	7.0% (15/215)
Sex
Male	25.7% (35/136)	13.9% (19/136)	7.4% (10/136)
Female	18.8% (23/122)	13.1% (16/122)	6.6% (8/122)
Patients with other allergy	4.5% (4/88) **	1.1% (1/88) **	0*