. Author manuscript; available in PMC: 2014 Dec 1.

Published in final edited form as: Cancer Epidemiol. 2013 Aug 30;37(6):10.1016/j.canep.2013.08.004. doi: 10.1016/j.canep.2013.08.004

Table 2.

Multivariable unconditional logistic regression models of the effects of regular oral antihistamine use on glioma risk, both in the overall HCCCS^a study population and stratified by self-reported history of allergies/asthma.

	Logistic regression^b
	Odds Ratios (95% CI)^c
	Overall	Allergies/Asthma
	(n=824)	Yes (n=215)	No (n=609)
Regular Antihistamine Use
Yes	2.15 (1.42–3.25)	4.19 (2.06–8.51)	1.59 (0.95–2.67)
No	1.00 (reference)	1.00 (reference)	1.00 (reference)
Self-Reported Allergies/Asthma
Yes	0.28 (0.20–0.41)	-	-
No	1.00 (reference)	-	-
Self-Reported History of Chickenpox
Yes	0.49 (0.34–0.71)	1.81 (0.58–5.70)	0.39 (0.26–0.60)
No	1.00 (reference)	1.00 (reference)	1.00 (reference)
IgE Levels
≥250IU per mL	1.45 (0.77–2.74)	1.76 (0.53–5.84)	1.45 (0.68–3.13)
<250 IU per mL	1.00 (reference)	1.00 (reference)	1.00 (reference)

Note. IU per mL= International Units per milliliter

Harris County Case-Control Study

All odds ratios are also adjusted for matching variables (age, sex, and race).

Bolding indicates statistical significance.