Table V.

Frequency of Detection and Urinary DAP Concentrations (μg/L) for Farmworkers, Eastern North Carolina, for the Four Data Collection Periods, 2007.

			Period 1: 5/1 – 6/8 (n=250)							Period 2: 6/9 – 7/7 (n=233)
Metabolite	Frequency of Detection		Concentrations					Frequency of Detection		Concentrations
			Maximum	Percentiles						Maximum	Percentiles
	n	%		25th	median	75th	95th	n	%		25th	median	75th	95th
DMP	92	36.8	395.09	0.18	0.69	3.20	14.37	80	34.3	67.1	0.18	0.71	2.76	20.56
DMTP	134	53.6	1557.23	0.43	1.84	6.64	49.16	194	83.3	836.8	1.58	3.44	10.59	108.64
DMDTP	35	14.0	286.02	0.01	0.08	0.59	12.75	66	28.3	182.9	0.02	0.17	1.10	17.82
DEP	97	38.8	127.42	0.40	0.96	2.68	7.15	76	32.6	37.9	0.19	0.60	2.04	10.53
DETP	42	16.8	141.97	0.03	0.13	0.65	7.45	61	28.2	52.1	0.10	0.34	1.01	5.58
DEDTP	6	2.4	96.25	0.00	0.00	0.00	0.42	23	9.9	11.7	0.00	0.01	0.05	1.03
			Period 3: 7/8 – 8/5 (n=229)							Period 4: 8/6 – 9/4 (n=227)
Metabolite	Frequency of Detection		Concentrations					Frequency of Detection		Concentrations
			Maximum	Percentiles						Maximum	Percentiles
	n	%		25th	median	75th	95th	n	%		25th	median	75th	95th
DMP	99	43.3	134.98	0.28	0.89	3.75	18.73	117	51.5	139.79	0.53	1.44	5.44	27.72
DMTP	214	93.4	2577.78	1.72	4.37	10.27	138.21	193	85.0	944.87	2.12	4.98	14.34	171.76
DMDTP	106	46.3	577.62	0.04	0.25	1.54	27.61	106	46.7	192.24	0.03	0.22	1.46	33.50
DEP	87	38.0	45.44	0.27	0.77	3.28	12.24	120	52.9	36.01	0.65	1.51	5.00	16.28
DETP	112	48.9	52.43	0.19	0.53	1.69	10.16	88	38.8	101.38	0.16	0.52	1.80	7.00
DEDTP	24	10.5	48.18	0.00	0.00	0.02	0.81	23	10.1	22.82	0.00	0.01	0.05	1.43