Table 1.

Summary statistics for CHEAR QC pools A and B by study showing mean values for each of the seven common phthalates by study and overall and the intra- and inter-study percent CVs.

		Overall		Study #
		(N=90)		1 (N=4)		2 (N=25)		3 (N=7)		4 (N=33)		5 (N=21)
		Mean	%CV	Mean	%CV	Mean	%CV	Mean	%CV	Mean	%CV	Mean	%CV
Pool	Analyte	1.00	16	0.84	11	0.99	8	0.98	27	1.02	12	1.02	22
A	MBZP
	MECPP	4.71	39	5.13	1	7.28	3	3.91	15	4.28	9	2.50	30
	MEHHP	2.89	25	2.77	4	2.92	6	2.19	11	2.36	11	3.94	17
	MEOHP	2.13	20	1.75	3	2.04	5	2.47	22	2.47	13	1.67	18
	MEP	16.0	21	13.50	13	15.31	4	13.07	9	13.82	9	21.80	1
	MIBP	3.82	23	2.60	51	2.88	16	3.92	14	4.31	11	4.38	13
	MNBP	7.86	20	5.41	11	6.17	6	7.93	13	8.26	10	9.70	6
B	MBZP	1.41	16	1.26	6	1.39	4	1.59	12	1.52	11	1.23	24
	MECPP	6.05	38	6.28	2	9.05	4	5.26	14	5.91	9	2.95	31
	MEHHP	4.34	29	4.24	4	4.18	8	3.17	13	3.54	7	6.19	21
	MEOHP	2.76	18	2.42	5	2.63	2	3.27	7	3.18	11	2.15	16
	MEP	16.9	21	13.33	14	16.42	5	13.29	11	14.57	7	22.87	1
	MIBP	4.60	26	5.93	62	3.51	19	4.69	11	4.91	12	5.13	17
	MNBP	8.26	18	6.93	13	6.36	5	8.25	7	8.89	10	9.79	6