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The proportion of regular opioid users, defined as 45+ days of use in each fixed 91-day quarter, during the quarters pre (0, −1, and −2) and post (quarters 1–20) incident breast cancer diagnosis. The red line denotes the number of breast cancer survivors at each quarter.
*Regular opioid use defined as having 45+ days of use in each 91-days quarter.Quarter #1 is the quarter in which the incident brest cancer was diagnosed.
