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. Author manuscript; available in PMC: 2024 May 1.
Published in final edited form as: Oral Oncol. 2023 Mar 22;140:106363. doi: 10.1016/j.oraloncology.2023.106363

Figure 1:

Figure 1:

Stacked bar frequency distribution of opioid usage in R/M HNSCC patients prior to anti-PD-L1 treatment and on the day of treatment. Opioid usage was calculated as morphine milligram equivalency amount per day based on opioid prescriptions identified by chart review.