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. Author manuscript; available in PMC: 2014 Apr 1.

Published in final edited form as: Environ Int. 2013 Feb 15;54:74–84. doi: 10.1016/j.envint.2012.12.014

Unadjusted plasma PFOA concentration (ng/mL) by categories representing time intervals since the most recent pregnancy (Figure 1a) and by categories representing total breastfeeding duration (Figure 1b). Box plot details: the horizontal lines indicate the median PFOA concentration; the box indicates the interquartile range (IQR) (25th percentile to 75th percentile); the whiskers represent observations within 1.5 times the IQR; and the circles indicate observations more than 1.5 times the IQR away from the box, considered outliers.

Unadjusted plasma PFOA concentration (ng/mL) by categories representing time intervals since the most recent pregnancy (Figure 1a) and by categories representing total breastfeeding duration (Figure 1b). Box plot details: the horizontal lines indicate the median PFOA concentration; the box indicates the interquartile range (IQR) (25th percentile to 75th percentile); the whiskers represent observations within 1.5 times the IQR; and the circles indicate observations more than 1.5 times the IQR away from the box, considered outliers.