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FIGURE, SUPPLEMENTAL DIGITAL CONTENT 4. Duration of Bacteremia Before and After Guidelines. Box and whisker plots: line represents median; box represents interquartile range; whiskers represent 2.5-97.5 percentiles; dots show outliers. Median for most categories is 1 and the data are nonparametric. A. MGH NICU. B. BWH NICU. No significant change in the duration of sepsis was noted for any category of LOS at either study site.