Table 1.

Characteristics of controls, glioma cases, and meningioma cases

	Controls (N = 799)		Glioma Cases (N = 489)		Meningioma Cases (N = 197)
Characteristic	n	%	n	%	n	%
Gender
Female	436	55%	212	43%	151	80%
Male	363	45%	277	57%	46	24%
Age (years)
≤45	317	40%	173	35%	47	25%
46–65	319	40%	188	38%	94	50%
≥66	163	20%	128	26%	56	30%
Site
Phoenix	405	51%	244	50%	99	52%
Boston	220	28%	153	31%	79	42%
Pittsburgh	174	22%	92	19%	19	10%