. 2013 Sep 5;121(11-12):1313–1318. doi: 10.1289/ehp.1306615

Table 2.

Measured and estimated PFOA exposure concentrations (ng/mL) in the cohort (n = 32,254).

Cohort	Median (range)
Measured PFOA serum level in 2005–2006
Community (n = 28,541)	24.2 (0.25–4,752)
Worker (n = 1,881)^a	112.7 (0.25–22,412)
Estimated annual PFOA serum level^b
Community (n = 28,541)	19.4 (2.8–9,217)
Worker (n = 3,713)	174.4 (5.2–3,683)
^aWorkers who did not participate in the C8 Health Project did not have serum levels measured (n = 1,823) and other workers were missing measurements (n = 9). ^bCommunity residents were followed for an average of 32 years, and workers were followed for an average of 38 years.