Table 1.

Description of the 282194 participants from 12 European cohorts included in the study

									Tumor by Malignancy		Tumor by Location
	Enrollment	Original N	Final N	% Total Cohort	Mean Age, y	Person- years at Risk	Mean Follow-up Time, y	N Total Brain Tumor	N Nonmalignant Brain Tumor	N Malignant Brain Tumor	N Tumor in Meninges	N Tumor in Brain
EPIC-Umeå, Sweden	1992–96	25 600	24 997	97	45.9	335 293	14	–	–	63	21	34
HUBRO, Norway	2000–01	21 363	18 974	89	48.2	161 377	9	39	19	20	12	21
CEANS, Swedena	1992–2002	22 036	19 224	87	56.5	199 113	11	–	–	37	21	16
DCH, Denmark	1993–97	38 064	37 250	98	56.8	552 776	16	200	106	94	73	108
EPIC-NL, Netherlandsb	1993–97	36 505	31 826	87	50.3	375 875	12	64	23	41	18	43
VHM&PP, Austria	1985–2005	131 907	131 187	99	41.3	2 332 547	19	–	–	176	–	182
EPIC-Varese, Italy	1993–97	11 893	10 571	89	51.6	113 976	12	34	20	15	–	–
EPIC-Turin, Italy	1993–2008	8774	8165	93	50.3	115 519	14	28	8	20	12	16

EPIC, European Prospective Investigation into Cancer and Nutrition; HUBRO, Oslo Health Study; CEANS, Cardiovascular Effects of Air Pollution and Noise in Stockholm; DCH, Danish Diet, Health and Cancer cohort; VHM&PP, Vorarlberg Health Monitoring and Prevention Programme. ^aPooled data from the 4 cohorts from Stockholm, Sweden: SNAC-K, SALT/Twin gene, 60 y/IMPROVE, and SDPP. ^bPooled data from 2 Dutch cohorts: EPIC-MORGEN and EPIC-PROSPECT.