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(A) Emergency department (ED) utilization for postural orthostatic tachycardia syndrome (POTS) symptoms before and after diagnosis. (B) Median number of ED visits for POTS before (left) and after (right) diagnosis. The inset is a zoomed-in version of the main figure, to better illustrate the median and interquartile range. Extreme outlier values (375 visits in 1 female patient before diagnosis, and 600 visits in 1 female patient after diagnosis) were excluded from this box plot.
