Fig. 1.

This box-and-whisker plot demonstrates the outpatient opioid prescriptions for both TKA and THA in the preguideline and postguideline eras. Orange boxes represent TKA and blue boxes represent THA; solid-colored boxes indicate the preguideline era and hashed colored boxes indicate the postguideline era. The box represents the 25^th to 75^th percentile IQR and the horizontal line within the box shows the median value. The tails from each box stretch from the 5^th to 95^th percentile. The left y-axis standardizes the outpatient opioid prescription to OME, whereas the right y-axis standardizes to 5-mg tablets of oxycodone. The dashed horizontal line at 400 OME/50 tablets of 5 mg oxycodone represents the new guideline maximum for primary TKA and THA in opioid-naïve patients. The plot demonstrates a reduction in the discharge opioid prescription for both TKA and THA as well as a much tighter distribution of prescription values in the postguideline era.