Table 3.

Adjusted odds ratios for the use of antihistamines stratified by history of asthma or allergies among glioma cases and controls, Harris County Adult Glioma Study, 2001–2006

Antihistamine use	Controls (n = 600)	Cases (n = 325)	Odds ratio (95% CI)
No asthma or allergy history
No use	362	259	Reference
<10 y	21	14	0.91 (0.45, 1.84)
≥10 y	15	8	0.70 (0.29, 1.69)
Any use	36	22	0.82 (0.47, 1.44)
Any asthma or allergy history
No use	146	23	Reference
<10 y	32	8	1.73 (0.69, 4.29)
≥10 y	24	13	3.56 (1.56, 8.14)
Any use	56	21	2.54 (1.28, 5.03)

NOTE: The odds ratios were derived from unconditional logistic regression models, adjusting for age, gender, and race.