Table 1

Characteristics of individuals with glioma and controls

Glioma N (%)Controls N (%)
(n = 468)(n = 768)
Age at interviewa,b
 18–2957 (12.2)98 (12.8)
 30–49170 (36.3)298 (38.8)
 50–69161 (34.4)266 (34.6)
 70+80 (17.1)106 (13.8)
Sexb
 Female205 (43.8)423 (55.1)
 Male263 (56.2)345 (44.9)
Education
 High school or less175 (37.4)323 (42.0)
 1–3 yrs of college127 (27.1)238 (31.0)
 College graduate85 (18.2)101 (13.2)
 Graduate or professional school65 (13.9)85 (11.1)
 Missing16 (3.4)21 (2.7)
Annual household income:
 <$25,000115 (24.6)237 (30.9)
 $25,000–$49,999152 (32.5)231 (30.1)
 $50,000–$74,99978 (16.7)143 (18.6)
 $75,000 or more102 (21.7)123 (16.0)
 Missing21 (4.5)34 (4.4)
No. of siblings
 044 (9.4)87 (11.3)
 1–2215 (45.9)324 (42.2)
 3–4122 (26.1)203 (26.5)
 ≥587 (18.6)154 (20.0)
No. of offspring:
 0122 (26.1)194 (25.3)
 1–2189 (40.4)317 (41.3)
 3–4131 (28.0)183 (23.8)
 5+26 (5.5)74 (9.6)
Glioma histology
 Astrocytoma9400-21c100 (21.5)N.A.d
 Glioblastoma multiforme9440-42c229 (48.9)
 Oligodendroglioma9450-60c54 (11.5)
 Ependymoma9391-94c10 (2.1)
 Other glioma9380-83c,
9422-30c,
9470-73c,
9500-06c75 (16.0)
  • a Age at interview was within 3 weeks of age at diagnosis for 75% of glioma cases or within 3 weeks of age at hospital admission for 92% of controls.

  • b Age and sex matching are not exact because some controls also were matched to meningioma and acoustic neuroma cases not included in this analysis.

  • c International Classification of Diseases for Oncology, 2nd edition, Morphology codes.

  • d Not applicable.