Table 2.

Demographics by histology for cases compared with frequency-matched controls from 7 sites

Characteristic	Oligodendroglioma (n = 329), %	Anaplastic oligodendroglioma (n = 146), %	Both OGD and AO (n = 475), %	Mixed glioma (n = 142), %	All tumor types (n = 617), %	Controls (n = 1,260), %
Gender
Male	47.1a	59.6	51.0	58.5	52.7	53.3
Race (US sites only; 1 missing)
Asian	3.1	2.3	2.9	4.6	3.3	3.2
Black, NH	0.6	0.8	0.7	0.8	0.7	0.8
Hispanic	5.3	4.5	5.1	0.8	4.1	3.7
Other	1.6	3.0	2.0	0.8	1.7	1.6
White, NH	89.4	89.5	89.4	93.0	90.2	90.8
Age group
18–29	15.2a	8.9	13.3	14.1	13.5	12.1
30–39	31.3	21.9	28.4	26.1	27.9	27.1
40–49	31.0	26.0	29.5	29.6	29.5	28.4
50–59	12.5	21.9	15.4	16.2	15.6	17.8
60–69	7.0	15.8	9.7	9.9	9.7	10.7
70–79	2.4	4.8	3.2	3.5	3.2	3.2
80+	0.6	0.7	0.6	0.7	0.7	0.7
Education
HS or less	34.4	36.6	35.0	34.5	34.9	30.6
Some college	49.5	45.5	48.3	50.7	48.9	51.8
Post-grad	16.1	17.9	16.7	14.8	16.2	17.6
Marital status
Married	69.0	74.0	70.5	59.9	68.1	64.6
Never married	17.3	11.6	15.6	18.3	16.2	19.0
Widowed/divorced/separated	13.7	14.4	13.9	21.8	15.7	16.4

^aP < .05 (χ² test for the association between each case type with controls). Abbreviations need to be identified/defined in a footnote for each table.