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. Author manuscript; available in PMC: 2020 May 31.
Published in final edited form as: Fertil Steril. 2018 Nov;110(6):1137–1144.e1. doi: 10.1016/j.fertnstert.2018.06.045

Table 2.

Distribution of urinary organophosphate flame retardant metabolites (ug/L) measured among 155 women with 339 cycle-specific urine samples in the EARTH Study.

Specific Gravity Adjusteda N > MDLb (%) GM (95% CI) Min 10th Pctl 25th Pctl 50th Pctl 75th Pctl 90th Pctl 95th Pctl Max
BCIPP 0 (0) N/A <MDL <MDL <MDL <MDL <MDL <MDL <MDL <MDL
BDCIPP 329 (94) 0.69 (0.59, 0.80) <MDL 0.19 0.30 0.65 1.46 2.72 4.03 6.74
DPHP 335 (98) 0.80 (0.69, 0.92) <MDL 0.30 0.47 0.73 1.19 2.34 3.52 657
ip-PPP 315 (87) 0.09 (0.07, 0.11) <MDL 0.02 0.05 0.24 0.39 0.32 0.55 76.1
tb-DPP 201 (23) N/A <MDL <MDL 0.06 0.08 0.20 0.36 374 374
ΣPFRc - 7.89 (7.12, 8.73) 1.5 3.7 4.54 7.25 1.16 1.96 2.55 2.89
a

Adjusted to specific gravity, range (1.002–1.028).

Abbreviations: < MDL, method detection limit; Max, maximum; Pctl: percentile; Min, minimum; [bis(1,3-dichloro-2-propyl) phosphate (BDCIPP); diphenyl phosphate (DPHP); isopropylphenyl phenyl phosphate (ip-PPP); tert-butylphenyl phenyl phosphate (tb-PPP); bis(1-chloro-2-propyl) phosphate (BCIPP)].

b

All values below MDL were assigned a value equal to the MDL divided by √2.

c

ΣPFR is the molar sum of the three organophosphate flame retardant metabolite concentrations with high detection frequencies: (BDCIPP*(1/319.91) + (DPHP*(1/250.04) + ipPPP*(1/292.09). Concentrations shown in mol/ml X10–9.