Table 1.

Descriptive characteristics of the participants in a hospital-based case-control study of adult glioma conducted by the NCI and in a population-based case-control study of adult glioma conducted by the NIOSH

CharacteristicNCI
NIOSH
Cases (n = 489)
Controls (n = 799)
Cases (n = 798)
Controls (n = 1,175)
All* (n = 444)With blood (n = 391)Genotyped (n = 263)All (n = 715)With blood (n = 549)Genotyped (n = 330)All* (n = 783)With blood (n = 320)Genotyped (n = 288)All (n = 1152)With blood (n = 578)Genotyped (n = 535)
Male, %57.756.255.546.747.046.457.258.159.455.055.555.7
Mean age, years52.151.751.150.449.649.452.044.544.854.855.655.4
Education, %
    Less than high school10.69.47.210.810.910.917.810.09.717.516.816.6
    High school or general equivalency diploma or 3 y of college53.653.752.161.060.559.165.570.971.565.565.265.6
    Complete college or GRA or professional school33.334.637.625.926.628.516.619.118.816.818.017.8
    Unknown2.52.33.02.42.01.50.1000.100
  • * Limited to individuals of European background.