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. 2023 Dec 6;131(12):127002. doi: 10.1289/EHP12597

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EHP is an open-access journal published with support from the National Institute of Environmental Health Sciences, National Institutes of Health. All content is public domain unless otherwise noted.

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Figure 1 is a Spearman correlation matrix, plotting maternal plasma samples, including 2-(N-methyl-perfluorooctane sulfonamido) acetate, 2-(N-ethyl-perfluorooctane sulfonamido) acetate, perfluorononanoate, perfluorohexane sulfonate, perfluorooctanoate, perfluorooctane sulfonate (y-axis) across color intensity, ranging from negative 1 to 1 in increments of 0.2 (x-axis). — Spearman correlation matrix for PFAS measured in maternal plasma samples collected in early pregnancy ( $lowercase italic n equals 545$ ). Color intensity is proportional to the correlation coefficients. Samples were collected between April 1999 and July 2002. PFAS concentrations below the LOD (provided in Table 1) were imputed using the LOD divided by the square root of 2. Note: EtFOSAA, 2-( $N$ -ethyl-perfluorooctane sulfonamido) acetate; LOD, limit of detection; MeFOSAA, 2-( $N$ -methyl-perfluorooctane sulfonamido) acetate; PFAS, per- and polyfluoroalkyl substances; PFHxS, perfluorohexane sulfonate; PFNA, perfluorononanoate; PFOA, perfluorooctanoate; PFOS, perfluorooctane sulfonate.