Table 2

Multivariate case/control ORs for IgE levels and history of allergy: San Francisco Bay Area Adult Glioma Study, 1997–2000

ModelNOR * (95% CI)P
CasesControls
Total
1 IgE data
  ln(IgE) 226 (2.9 ± 0.10)289 (3.5 ± 0.9)0.73 (0.64–0.84)<0.001
2  Normal1301271.0
  Borderline70960.64 (0.42–0.96)0.03
  Elevated26660.37 (0.22–0.64)<0.001
3 Questionnaire data
  No allergies49451.0
  1–3 allergies1261670.69 (0.42–1.1)0.13
  4+ allergies51770.50 (0.28–0.88)0.02
Respiratory
4 IgE data
  Nonelevated respiratory IgE1401741.0
  Elevated respiratory IgE841150.76 (0.52–1.1)0.16
5 Questionnaire data
  No respiratory allergies1231291.0
  At least 1 respiratory allergy1011600.56 (0.39–0.81)0.002
Food
6 IgE data
  Nonelevated food IgE2212551.0
  Elevated food IgE3320.12 (0.04–0.41)<0.001
7 Questionnaire data
  No food allergies1872251.0
  At least 1 food allergy37620.70 (0.44–1.1)0.14
  • * Each model was adjusted for gender, ethnicity, education, smoking, and age.

  • Ln(IgE) was expressed as a continuous variable. Numbers in parentheses are least square means ± SE. All other variables are categorical.

  • Two cases, for whom smoking information was missing, were dropped from the model.