APPENDIX A.

Selected percentiles of urine concentrations (in μg/g creatinine) of 10 pesticides for 30 corn farmers from the Agricultural Health Study and 10 controls, 2002–2004

				Selected percentiles
	Pesticidea	Nb	% >LODc	10	50	75	90	95
FARMERS	Diazinond	313	12	<LOD	<LOD	<LOD	<LOD	2.7
	Malathiond	314	55	<LOD	0.52	1.5	2.4	3.5
	Metolachlord	314	24	<LOD	<LOD	<LOD	0.71	1.3
	2,4,5-Tf	314	0.6	<LOD	<LOD	<LOD	<LOD	<LOD
	Pyrethroidf	314	11	<LOD	<LOD	<LOD	0.17	0.42
	Isazaphosf	313	11	<LOD	<LOD	<LOD	1.6	2.6
	Coumaphosf	314	12	<LOD	<LOD	<LOD	0.23	0.32
	Pirimiphos methylf	313	11	<LOD	<LOD	<LOD	0.32	1.3
	Diethyl-m-toluamidef	313	3.2	<LOD	<LOD	<LOD	<LOD	0.12
	Methyl parathionf	314	49	<LOD	<LOD	0.37	0.96	1.5
CONTROLS	Diazinone	49	16	<LOD	<LOD	<LOD	2.7	3.1
	Malathione	49	51	<LOD	0.64	1.3	2.0	3.1
	Metolachlorf	49	8.2	<LOD	<LOD	<LOD	<LOD	0.68
	2,4,5-Tf	49	0	<LOD	<LOD	<LOD	<LOD	<LOD
	Pyrethroidf	49	6.1	<LOD	<LOD	<LOD	<LOD	0.88
	Isazaphosf	49	10	<LOD	<LOD	<LOD	2.8	3.8
	Coumaphosf	49	6.1	<LOD	<LOD	<LOD	<LOD	0.50
	Pirimiphos methylf	49	4.1	<LOD	<LOD	<LOD	<LOD	<LOD
	Diethyl-m-toluamidef	49	2.0	<LOD	<LOD	<LOD	<LOD	<LOD
	Methyl parathionf	49	57	<LOD	0.20	0.50	1.1	1.4

^aEstimates of coefficient of variations (CV) for the urinary pesticides were as follows (pesticide (CV)): diazinon (66.4%); malathion (7.1%); metolachlor (9.1%); pyrethroid (12.1%); isazaphos (19.2%); coumaphos (30.6%); diethyl-m-toluamide (3.7%); and methyl parathion (58.5%). None of the duplicate samples analyzed for 2,4,5-T were above the limit of detection. The ICC was above 80% for all analytes except methyl parathion (36.9%), diazinon and coumaphos (both 0%). The ICC for pirimiphos methyl could not be calculated.

^bTotal number of samples

^cPercentage of samples above the limit of detection (LOD)

^dReported used during the study period by farmers

^eReported used by controls during the study period

^fNot reported used during the study period