Table 2.

Descriptive statistics of pregnancy DAP metabolite concentrations (N=518)

	nmol/g creatinine					nmol/l
	min	p25	p50	p75	max	min	p25	p50	p75	max
DM metabolites in nmol/g creatinine *
< 18 weeks	6.6	153.6	255.3	420.4	6106.5	0.9	96.1	183.4	346.7	2627.3
18 – 25 weeks	24.8	184.2	272.1	433.6	2444.1	7.6	99.6	190.8	336.4	2396.8
> 25 weeks	29.2	165.8	248.9	397.6	2857.8	10.5	103.9	194.2	326.6	3300.5
Averaged	26.3	191.3	269.3	361.8	1381.0	14.7	118.5	179.6	289.4	1105.1
DE metabolites in nmol/g creatinine †
< 18 weeks	0.0	25.3	46.4	86.3	3030.5	0.0	16.0	31.3	66.2	6818.6
18 – 25 weeks	3.3	25.2	43.4	79.6	624.3	0.6	13.9	30.1	58.4	1093.4
> 25 weeks	4.1	22.0	43.9	81.5	671.4	1.1	14.7	31.5	64.4	538.2
Averaged	2.6	29.4	44.3	68.9	601.4	3.2	19.3	30.7	49.8	407.3
DAP metabolites in nmol/g creatinine ‡
< 18 weeks	15.4	197.3	321.4	521.7	6444.5	6.3	119.6	224.7	422.2	7798.7
18 – 25 weeks	41.0	222.2	323.0	519.8	2817.0	10.0	123.2	235.9	406.1	3056.7
> 25 weeks	42.1	204.1	308.0	495.7	3003.1	15.2	127.2	228.8	403.4	3332.6
Averaged	36.7	234.6	329.9	441.2	1818.8	30.2	144.4	220.7	348.9	1259.3

Abbreviations: Min=minimum, p25=25th percentile, P50=median (50th percentile), p75=75th percentile, max=maximum, DM= Dimethyl alkyl phosphates, DE= Diethyl alkyl phosphates, DAP= Total dialkyl phosphates.

^*DM is the sum of dimethylphosphate (DMP), dimethylthiophosphate (DMTP), and dimethyldithiophosphate (DMDTP).

^†DE is the sum of diethylphosphate (DEP), diethylthiophosphate (DETP), and diethyldithiophosphate (DEDTP).

^‡DAP is the sum of DEDTP, DETP, DEP, DMDTP, DMTP and DMP.