Figure 1.

Timing of comparisons of opioid-prescribing practice before and after completion of opioid-prescribing course

^*Index date is designated as date of course completion.

^†One year before index date versus 2.5 years before index date.

^‡One year after index date versus 2.5 years before index date.

^§Two years after index date versus 2.5 years before index date.