Table 2.

Comparison of median urinary chemical concentrations by semen sample status.

	Overall (n = 439)	Provided sample (n = 419)	No sample (n = 20)
Urinary Chemicals (ng/mL)	Median (IQR)	Median (IQR)	Median (IQR)
Methyl-paraben	6.55 (2.13, 26.4)	6.51 (2.16, 26.4)	7.23 (1.83, 75.0)
Ethyl-paraben	0.37 (0.17, 1.26)	0.36 (0.17, 1.24)	0.88 (0.18, 3.81)
Propyl-paraben	1.45 (0.49, 5.55)	1.39 (0.49, 5.52)	2.41 (0.51, 18.2)
Butyl-paraben	0.03 (0.01, 0.17)	0.03 (0.01, 0.17)	0.03 (0.02, 0.17)
Benzyl-paraben	0.02 (0.00, 0.04)	0.02 (0.00, 0.04)	0.01 (0.00, 0.05)
4-hydroxy benzoic acid	614 (348, 920)	612 (348, 922)	668 (397, 877)
3,4-dihydroxy benzoic acid	33.0 (18.6, 57.2)	33.3 (18.7, 57.3)	25.9 (15.3, 36.0)
Methyl-protocatechuic acid	20.9 (12.3, 45.6)	21.2 (12.2, 48.1)	19.5 (14.4, 34.1)
Ethyl-protocatechuic acid	3.57 (1.17, 11.81)	3.57 (1.17, 11.81)	4.29 (1.1, 11.0)
Triclosan	17.6 (4.42, 77.1)	17.2 (4.39, 77.5)	26.8 (6.60, 48.8)
Triclocarban	0.01 (0.00, 0.03)	0.01 (0.00, 0.03)	0.01 (0.00, 0.10)

Abbreviations: IQR, interquartile range.