Table 3.

Geometric mean (GM) and 95% confidence interval (CI), detection frequency (DF), level of detection (LOD) (ng/mL) and percentiles^a for each PFAS analyzed in the WFBC cohort.

							Percentiles
Compound Name	abbr.	DF %	LOD	GM (95% CI)	Min	Max	25th	50th	75th	95th
perfluorohexane sulfonic acid	PFHxS	100	0.02	3.79 (3.24, 4.43)	0.22	90.57	1.87	3.04	6.79	22.28
perfluorooctanoic acid	PFOA	100	0.02	1.15 (1.05, 1.25)	0.29	5.18	0.83	1.11	1.56	3.22
perfluorooctane sulfonic acid	PFOS	100	0.02	4.11 (3.68, 4.59)	0.54	81.02	2.56	4.14	6.53	12.61
perfluorononanoic acid	PFNA	100	0.05	0.67 (0.61, 0.74)	0.15	4.49	0.42	0.64	1.03	2.2
perfluorodecanoic acid	PFDA	98	0.02	0.25 (0.23, 0.28)	<LOD	3.69	0.17	0.24	0.36	0.83
perfluoroundecanoic acid	PFUnDA	80	0.02	0.18 (0.14, 0.22)	<LOD	10.85	0.11	0.26	0.48	1.11
perfluorobutane sulfonic acid	PFBS	73	0.02	0.13 (0.10,0.16)	<LOD	1.45	<LOD	0.23	0.34	0.84
perfluorododecanoic acid	PBDoA	24	0.02	*	<LOD	1.73	<LOD	<LOD	<LOD	0.3
perfluorobutanoic acid	PFBA	0	0.05	*	<LOD	<LOD	<LOD	<LOD	<LOD	<LOD
perfluorhexanoic acid	PFHxA	0	0.02	*	<LOD	<LOD	<LOD	<LOD	<LOD	<LOD
perfluorheptanoic acid	PFHpA	0	0.02	*	<LOD	<LOD	<LOD	<LOD	<LOD	<LOD
perfluorooctane sulfonamide	PFOSA	0	0.02	*	<LOD	<LOD	<LOD	<LOD	<LOD	<LOD

^aPercentiles and summary statistics calculated using LOD/sqrt2 for those with less than 100% detection frequency.

^*GM and 95%CI not calculated for PFAS with less than 70% DF