Table 1.

Descriptive characteristics of glioma cases and hospital-based controls

All cases (n = 419)Cases with high-grade tumors (n = 344)Cases with low-grade tumors (n = 75)Hospital-based controls (n = 612)
Gendera
 Male248 (59.2)217 (63.1)31 (41.3)280 (45.7)
 Female171 (40.8)127 (36.9)44 (58.7)332 (54.3)
Agea,b
 <200 (0.0)0 (0.0)0 (0.0)4 (0.7)
 20–2943 (10.3)28 (8.1)15 (20.0)38 (6.2)
 30–3948 (11.5)30 (8.7)18 (24.0)56 (9.2)
 40–4991 (21.7)74 (21.5)17 (22.7)98 (16.0)
 50–59116 (27.7)99 (28.8)17 (22.7)160 (26.3)
 60–6999 (23.6)93 (27.0)6 (8.0)161 (26.3)
 70–7921 (5.0)19 (5.5)2 (2.7)69 (11.3)
 80+1 (0.2)1 (0.3)0 (0.0)26 (4.3)
Race/ethnicity
 White, NH383 (91.4)315 (91.6)68 (90.7)526 (86.0)
 Black, NH14 (3.3)13 (3.8)1 (1.3)49 (8.0)
 Hispanic8 (1.9)6 (1.7)2 (2.7)14 (2.3)
 Other14 (3.3)10 (2.9)4 (5.3)23 (3.8)
Marital statusa,b
 Married326 (77.8)280 (81.4)46 (61.3)427 (69.8)
 Divorced30 (7.2)18 (5.2)12 (16.0)65 (10.6)
 Separated3 (0.7)3 (0.9)0 (0.0)14 (2.3)
 Widowed7 (1.7)6 (1.7)1 (1.3)42 (6.9)
 Never married53 (12.6)37 (10.8)16 (21.3)64 (10.5)
Education, ya
 0–82 (0.5)2 (0.6)0 (0.0)10 (1.6)
 9–12102 (24.3)80 (23.3)22 (29.3)181 (29.6)
 13–16183 (43.7)146 (42.4)37 (49.3)266 (43.5)
 >16132 (31.5)116 (33.7)16 (21.3)155 (25.3)
Incomea,c
 <$50,000108 (26.4)79 (23.6)29 (39.2)226 (37.7)
 $50–99,999139 (34.0)117 (34.9)22 (29.7)220 (36.7)
 $100,000–150,00091 (22.3)80 (23.9)11 (14.9)99 (16.5)
 >$150,00071 (17.4)59 (17.6)12 (16.2)54 (9.0)
Siteb
 NSUHS71 (17.0)48 (14.0)23 (30.7)71 (11.6)
 Duke348 (83.0)296 (86.0)52 (69.3)541 (88.4)
  • aP value for chi-square test comparing high grade to hospital controls is <0.05.

  • bP value for chi-square test comparing low grade to hospital controls is <0.05.

  • cIncome was missing for 9 cases with high-grade tumors, 1case with a low-grade tumor, and 13 controls.