Environmental Health

Table 2 Distribution and Detection Rate of PFAS

From: Association of Perfluoroalkyl and polyfluoroalkyl substances (PFASs) exposures and the risk of systemic lupus erythematosus: a case–control study in China

			Percentile
exposure	group	mean	5th	25th	50th	75th	95th	Detection rate (%)	p^a
PFUnA	total	0.79	0.05	0.23	0.82	1.22	1.54	96.5%	0.014
	case	0.88	0.09	0.54	0.99	1.27	1.54
	control	0.70	0.05	0.17	0.66	1.15	1.54
PDA	total	0.42	0.05	0.21	0.38	0.55	1.07	99.2%	0.018
	case	0.46	0.06	0.27	0.39	0.63	1.07
	control	0.38	0.05	0.15	0.34	0.51	1.05
PFBA	total	0.27	0.06	0.14	0.23	0.34	0.65	100%	< 0.001
	case	0.31	0.04	0.16	0.27	0.41	0.74
	control	0.22	0.06	0.13	0.21	0.28	0.43
PFHpA	total	0.17	0.03	0.08	0.13	0.22	0.54	95.9%	< 0.001
	case	0.21	0.05	0.11	0.16	0.23	0.60
	control	0.14	0.01	0.06	0.11	0.18	0.34
PFHxS	total	0.15	0.03	0.07	0.12	0.19	0.36	98.6%	< 0.001
	case	0.19	0.05	0.11	0.17	0.23	0.52
	control	0.11	0.02	0.05	0.09	0.13	0.30
PFASs mixture	total	1.80	0.58	1.24	1.82	2.32	2.98		< 0.001
	case	2.05	0.70	1.66	2.08	2.55	3.05
	control	1.56	0.50	1.10	1.49	2.06	2.63

^aFrom Mann − Whitney U test

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ISSN: 1476-069X

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