Table 1.

Demographic and inflammation-related characteristics of study subjects, Harris County Adult Glioma Study, 2001-2006

Controls (n = 600)Cases (n = 325)P value*
Age (y)
    Mean (SE)50.1 (0.54)50.6 (0.74)0.53
Gender [n (%)]
    Male311 (52)188 (58)0.08
    Female289 (48)137 (42)
Race [n (%)]
    White476 (79)264 (81)0.80
    African-American41 (7)17 (5)
    Hispanic71 (12)37 (11)
    Other12 (2)7 (2)
Education [n (%)]
    <High school21 (4)16 (5)0.001
    High school/some college250 (42)173 (54)
    College degree170 (28)75 (23)
    Advanced degree159 (26)57 (18)
Ever cigarette use [n (%)]453 (76)235 (73)0.32
Ever alcohol use [n (%)]546 (91)249 (77)<0.001
Family history of cancer [n (%)]468 (78)261 (80)0.412
Family history of brain tumor [n (%)]48 (8)51 (16)<0.001
Inflammation-related events
    History of asthma or allergy [n (%)]202 (34)44 (14)<0.001
    History of chickenpox [n (%)]515 (86)239 (74)0.001
    History of shingles [n (%)]51 (9)17 (5)0.069
    History of oral herpes [n (%)]76 (13)10 (3)<0.001
    History of mononucleosis [n (%)]65 (11)13 (4)0.001
    History of migraine headaches [n (%)]50 (8)4 (1)<0.001
    Previous head injury [n (%)]184 (31)115 (36)0.104
    Previous stroke [n (%)]18 (3)6 (2)0.292
  • * P values derived from χ2 tests for categorical variables and t tests for continuous variables; comparison of cases to controls.

  • Matching variables.