Novel Approaches to Assessing Cannabis Impaired Driving (NAACID)
United States207 participantsStarted 2020-06-20
Plain-language summary
Researchers at the University of Colorado Anschutz Medical Campus, Colorado School of Public Health, and Injury \& Violence Prevention Center want to learn more about how people are affected by cannabis in different ways. The study will use a driving simulator to compare the driving performance of adults who use cannabis daily, occasionally or have not recently used cannabis.
Who can participate
Age range
25 Years – 55 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. Participants who are ≥21 years old and ≤55 years old
. Participants who are able to provide written, informed consent
. Participants with active healthcare coverage (including health insurance, Medicaid, etc.)
. Participants who are willing to complete up to two in-person study visits (one for Phases 1 \& 2, and two for Phases 3 \& 4), including up to two urine drug screens, two alcohol breathalyzer tests, and one urine pregnancy test (if applicable)
. Participants who agree to refrain from using non-prescription psychotropic drugs (e.g., ecstasy), hallucinogens, and synthetic cannabinoids during the study
. Participants who agree to refrain from drinking \>3 alcoholic drinks the day prior to the data collection study visit (the single visit for Phases 1 \& 2, and the second visit for Phases 3 \& 4)
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
. Participants who agree to refrain from using any cannabis products for at least 8 hours prior to the data collection study visit (the single visit for Phases 1 \& 2, and the second visit for Phases 3 \& 4)
. Participants who are willing to provide and use their own cannabis product that has been procured from a licensed dispensary, is labeled with THC potency, and contains \<2% CBD (cannabis use groups only; the single visit for Phases 1 \& 2, and the second visit for Phases 3 \& 4)
Exclusion criteria
. Prisoners
. Participants who have nocturnal schedules (e.g., work night shifts)
. Participants with a history of abuse or addiction to substances other than cannabis (e.g., prescription and non-prescription pharmaceuticals, alcohol, or illicit drugs)
. Participants who have expressed an interest in substance abuse treatment within the 60 days prior to study enrollment
. Participants who report consuming an average of \>3 alcoholic drinks per day in the 30 days prior to study enrollment
. Participants with any past or current diagnosis of schizophrenia, narcolepsy, heart disease, epilepsy, or a traumatic brain injury
. Participants who are currently experiencing untreated bipolar disorder, major depression, sleep apnea, or other uncontrolled medical conditions as determined by the investigators (e.g., hypertension)
. Participants with a known balance or gait disorder