Table 1.

Urinary concentrations (ng/mL) of BP derivatives by selected demographic characteristics (ENDO Study)

	2OH-4MeO-BP					2,4OH-BP					4OH-BP
Characteristics	Min	25%a	Median	75%a	Max	Min	25%a	Median	75%a	Max	Min	25%a	Median	75%a	Max
Total (n =625)	<0.28	2.3	6.1	37	5900	<0.082	1.7	6.1	31	3200	<0.082	0.17	0.36	0.69	22
Sampling site
Utah (n =526)	<0.28	1.9	5.3	28	5900 **	<0.082	1.5	5.1	25	3200 **	<0.082	0.17	0.35	0.68	22
California (n =99)	1.0	3.4	24	100	2200	0.54	3.2	15	59	1800	<0.082	0.23	0.42	0.73	13
Race/ethnicity
Hispanic (n =82)	<0.28	3.3	6.9	46	5900	<0.082	1.7	3.9	34	3200	<0.082	0.19	0.36	0.70	2.6
Non-hispanic while (n =475)	<0.28	2.1	5.7	33	2900	<0.082	1.6	6.3	27	2800	<0.082	0.17	0.37	0.70	22
Non-hispanic black (n=10)	1.0	1.1	6.6	75	190	0.54	1.5	6.2	24	95	<0.082	0.28	0.41	0.73	1.7
Asian/Hawaiian/Pacific Islander/Alaska Native/American Indian (n =34)	<0.28	2.2	20	270	2200	<0.082	1.6	19	120	640	<0.082	0.20	0.32	0.62	5.5
Other (n=11)	<0.28	1.2	3.2	110	240	0.45	1.1	2.3	41	130	<0.082	<0.082	0.37	2.7	13
Multi-racial (n =13)	<0.28	2.6	3.1	17	100	1.6	2.0	2.5	20	37	<0.082	0.16	0.29	0.33	1.1
Marital status
Married (n =448)	<0.28	2.4	6.0	41	2200	<0.082	1.7	6.1	31	1800	<0.082	0.16	0.37	0.70	22
Other (n =172)	<0.28	2.1	7.2	35	5900	<0.082	1.6	6.8	33	3200	<0.082	0.21	0.36	0.70	7.9
Household incomeb
Below poverty (n =71)	<0.28	1.7	4.0	17	2900 **	<0.082	1.2	3.8	22	2800 **	<0.082	0.20	0.37	0.62	2.7
Within 180% poverty (n =75)	<0.28	1.6	5.5	17	130	<0.082	1.4	4.3	16	51	<0.082	0.17	0.33	0.66	11
Above 180% poverty (n =470)	<0.28	2.6	7.3	49	5900	<0.082	1.8	7.5	37	3200	<0.082	0.17	0.38	0.73	22
Age (in years)
20-29(n =221)	<0.28	1.7	5.1	18	2900 **	<0.082	1.6	5.3	21	2800	<0.082	0.18	0.35	0.69	22
30-39(n =264)	<0.28	2.6	6.9	49	1700	<0.082	1.6	7.5	36	1800	<0.082	0.14	0.33	0.64	21
≥40(n =139)	<0.28	2.9	7.7	64	5900	<0.082	2.0	6.4	38	3200	<0.082	0.19	0.41	0.73	20
Body mass index
<25.0 - thin (n =269)	<0.28	2.6	7.9	41	2900 *	<0.082	2.2	9.7	40	2800 **	<0.082	0.13	0.34	0.65	8.0
25.0 - 29.9-normal (n =153)	<0.28	2.6	7.1	50	5900	<0.082	2.0	8.0	32	3200	<0.082	0.17	0.38	0.73	22
≥30.0 - overweight (n =198)	<0.28	1.8	4.5	18	2200	<0.082	1.3	3.1	19	580	<0.082	0.21	0.38	0.70	21
Natural hair color (at age 18 years)
Red (n =67)	<0.28	3.3	7.8	53	1600	0.33	2.0	6.8	57	690	<0.082	0.13	0.32	0.83	8.0
Blonde (n =208)	<0.28	2.4	7.2	32	2900	<0.082	2.5	8.6	28	2800	<0.082	0.17	0.40	0.70	22
Brown & Black (n =346)	<0.28	2.0	5.7	41	5900	<0.082	1.4	5.0	31	3200	<0.082	0.18	0.35	0.65	21
Current smoke
No (n =538)	<0.28	2.5	6.8	43	5900 **	<0.082	1.6	6.9	32	3200	<0.082	0.18	0.38	0.72	22*
Yes (n=84)	<0.28	1.4	4.7	14	1300	<0.082	2.0	4.2	19	380	<0.082	0.11	0.27	0.51	7.1

^a25 or 75 percentile

^bBased on the 2007 HHS Poverty Guidlines accounting for the numbers of persons in the household for the 48 contiguous states and District of Columbia.

^*p <0.05,

^**p <0.01