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. Author manuscript; available in PMC: 2020 Jan 1.
Published in final edited form as: Ann Surg Oncol. 2018 Sep 20;26(1):17–24. doi: 10.1245/s10434-018-6772-3

Figure 4: Quantity of opioid prescribed and opioid prescription refills.

Figure 4:

Study outcomes were compared during the pre-intervention period (four months before the intervention), transition period (seven months after the intervention), and postintervention period (four months after the transition period). [A] Errors bars show 95% confidence intervals for each mean. The mean quantity of opioid prescribed during the post-intervention period was significantly reduced compared to the pre-intervention period for simple mastectomy or wide local excision for melanoma (30 vs. 16 tablets of 5 mg oxycodone, P < 0.001) and lumpectomy or breast biopsy (24 vs. 10 tablets of 5 mg oxycodone, P < 0.001). [B] Opioid prescription refills during the post-intervention period were not significantly different compared to the pre-intervention period for simple mastectomy or wide local excision for melanoma (13% vs. 14%, P = 0.8) and lumpectomy or breast biopsy (4% vs. 5%, P = 0.7).