The study will examine how medical cannabis use affects opioid analgesic use over time, with particular attention to THC/CBD content, HIV outcomes, and severe adverse events.



Eligible Ages
Over 18 Years
Eligible Genders
Accepts Healthy Volunteers

Inclusion Criteria

  • At least 18 years of age
  • English or Spanish fluency
  • New certification for medical cannabis within 90 days
  • No medical cannabis use in the 6 months prior to certification
  • Medical cannabis qualifying complication of "chronic or severe pain"
  • Use of prescribed or illicit opioid analgesics within 30 days

Exclusion Criteria

  • Inability to provide informed consent
  • Inability to complete study visits over 18 months
  • Qualifying conditions for medical cannabis in NY that are likely to cause unique pain syndromes (cancer, epilepsy, multiple sclerosis, spinal cord injury, amyotrophic lateral sclerosis, Parkinson's disease, inflammatory bowel disease, Hungtington's disease)
  • Terminal illness
  • Current or prior psychotic disorder

Study Design

Study Type
Observational Model
Time Perspective

Recruiting Locations

Montefiore Health System
Bronx, New York 10451
Chinazo Cunningham, MD

More Details

Albert Einstein College of Medicine

Study Contact

Chinazo Cunningham, MD,MS

Detailed Description

The overarching goal of the study is to understand how medical cannabis use affects opioid analgesic use over time, with particular attention to THC/CBD content, HIV outcomes, and adverse events. The study will include a cohort of 250 HIV+ and HIV- adults with (a) severe or chronic pain, (b) opioid analgesic use, and (c) new certification for medical cannabis. Over 18 months, participants will have 7 in-person visits every 3 months and 39 web-based questionnaires every 2 weeks. Data sources will include questionnaires; medical, pharmacy, and Prescription Monitoring Program records; and urine and blood samples. Over each 2-week time period (unit of analysis), the primary exposure measure will be number of days of medical cannabis use, and the primary outcome measure will be cumulative opioid analgesic dose. Qualitative interviews will also be conducted with a subgroup of 30 participants to explore perceptions of how medical cannabis use affects opioid analgesic use. Qualitative findings will help understand the reasons underlying the findings of the cohort study.


Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.