Table 1.

Country-specific and total sex and age distribution of glioblastoma case patients and population controls; sex-, age-, and country-specific; and country-adjusted associations between any self-reported allergy and glioblastoma among study participants by blood collection status

Sweden
Southeast England
Denmark
Finland
Total
CasesControlsCasesControlsCasesControlsCasesControlsCasesControls
Total number of cases and controls interviewed
    Number1766321466301288191158705652,951
    %Male59.748.169.246.756.348.458.342.061.146.1
    Median age (y)56.253.850.247.955.553.257.452.454.651.7
    No allergies (OR)1.001.001.001.001.00
    Any allergy* [OR (95% CI)]0.73 (0.50-1.05)0.53 (0.37-0.78)0.69 (0.44-1.10)0.71 (0.47-1.09)0.66 (0.54-0.80)
Cases and controls interviewed and blood collected and analyzed
    Number11043610745966602441103271,607
    %Male59.145.471.045.460.646.761.436.463.645.3
    Median age (y)55.754.349.448.855.053.058.253.553.452.0
    No allergies (OR)1.001.001.001.001.00
    Any allergy* [OR (95% CI)]0.67 (0.42-1.06)0.45 (0.29-0.70)0.73 (0.42-1.28)0.75 (0.32-1.77)0.59 (0.46-0.77)
  • NOTE: Data are results from population-based case-control studies conducted in Sweden, Southeast England, Denmark, and Finland (2000-2004).

  • * Includes self-reported asthma, hayfever, eczema, food allergy, and all other allergic conditions.