Table 2.

The positive rate of pollen allergen components between CCD-positive and CCD-negative patients

Allergen Components	n (%)		X2	P
	CCD Positive	CCD Negative
Cyn d 1	8(14.5)	11(47.8)	9.749	0.002
Cyn d 12	2(3.6)	3(13.0)	2.15	0.143
Art v 1	4(7.3)	1(4.3)	0.248	0.618
Art v 3	5(9.1)	3(13.0)	0.264	0.607
Art v 4	2(3.6)	6(26.1)	8.001	0.005
Phl p 1	4(7.3)	6(26.1)	4.669	0.031
Phl p 4	6(10.9)	0(0.0)	4.398	0.036
Phl p 5	1(1.8)	1(4.3)	0.379	0.538
Phl p 7	1(1.8)	2(8.7)	1.845	0.174
Phl p 12	2(3.6)	5(21.7)	5.835	0.016

Abbreviation: CCD, cross-reactive carbohydrate determinants.