Cannabis and Palliative Care Utilization among Non-Terminal Cancer Patients in the Illinois Medical Cannabis Program

High-quality palliative care has been shown to provide benefits for cancer patients, including greater longevity when initiated earlier in treatment. Previous research conducted among terminal patients in the Illinois Medical Cannabis Program has suggested that cannabis may be used as a complement to palliative care and as an alternative to prescription opioid medications. However, there is little research exploring this phenomenon among non-terminal cancer patients receiving palliative care. In this study, we used primary cross-sectional survey data to (1) identify the factors associated with the utilization of palliative care, (2) examine the associations between the utilization of palliative care and self-reported improvements in physical and psychological symptoms, and (3) estimate the differences in the average 30-day pain levels for non-terminal cancer patients receiving palliative care who reported using opioids compared with other non-terminal cancer patients in palliative care who did not report using opioids. In our sample, 87 out of 542 (16%) non-terminal cancer patients were receiving palliative care, and of these 87 patients, 54 (62%) reported opioid use in the past 12 months. Non-terminal cancer patients in the sample who reported low psychological well-being, frequent gastrointestinal symptoms, and prescription opioid use in the past 12 months had greater odds of palliative care utilization. Palliative care utilization was also positively associated with self-reported improvements in gastrointestinal symptoms. The concurrent use of cannabis and prescription opioids was associated with higher average 30-day pain levels and with higher average pain levels at the initiation of cannabis use among those non-terminal cancer patients engaged in palliative care services.