Agricultural crop density and risk of childhood cancer in the midwestern United States: an ecologic study

Table 1 Cases, rates^a, and population at risk from six Midwestern states included in crop analysis, 2004–2008, excluding counties with populations >300,000

			Total Leukemia		ALL		AML		CNS/PNS		CNS		PNS
	Number of counties	At-risk population^b	Cases	Rate	Cases	Rate	Cases	Rate	Cases	Rate	Cases	Rate	Cases	Rate
Illinois	96	286,387	108	37.7	88	30.7	13	4.5	90	31.4	51	17.8	39	13.6
Indiana^c	89	304,230	127	41.7	106	34.8	12	3.9	158	51.9	-	-	-	-
Iowa	98	162,469	62	38.2	51	31.4	10	6.2	59	36.3	39	24.0	20	12.3
Michigan	77	282,812	117	41.4	88	31.1	18	6.4	135	47.7	78	27.6	57	20.2
Missouri	111	228,951	98	42.8	71	31.0	20	8.7	94	41.1	48	21.0	46	20.1
Ohio	80	374,800	152	40.6	114	30.4	21	5.6	155	41.4	99	26.4	56	14.9
Total	551	1,639,649	664	40.5	518	31.6	94	5.7	691	42.1	315^a	19.2	218^a	13.3

^aCrude rates per 100,000 children. ^bAverage annual population at risk, children 0–4 years of age. ^cSeparate CNS and PNS counts were not provided for Indiana. - Cases and rates not available

ISSN: 1476-069X