Health Behavior, Inappropriate Dose of Drug Administered, Pain, Chronic
Conditions
Keywords
Deprescribing
Brief summary
To assess the effectiveness of a government-led population-based opioid intervention on discontinuation of opioid medication in community-dwelling adults with chronic non-cancer pain.
Interventions
OTHERDirect-to-consumer educational brochure
The intervention arm will be mailed an evidence-based, theory-driven direct-to-consumer educational brochure, highlighting the potential benefits and harms of opioids when used to treat chronic non-cancer pain.
Sponsors
Canadian Institutes of Health Research (CIHR)
Centre de Recherche de l'Institut Universitaire de Geriatrie de Montreal
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
HEALTH_SERVICES_RESEARCH
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Adults registered to receive pharmaceutical benefits in Manitoba, who are aged 18 years and over and who have received ≥90 days supply of opioids in the 6 months prior to the trial will be included. This will ensure chronic use and episodic use of opioids will be included.
Exclusion criteria
* People receiving palliative care, people with cancer, and people who receive opioids in hospital. People with dementia (identified by having received a prescription for memantine or a cholinersterase inhibitor in the previous 12 months) will be excluded.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Complete cessation of opioids | 6 months | Provincial prescription insurance claims will be used to measure whether or not opioids are dispensed to community-dwelling adults randomized to either the intervention or control groups between baseline and 6-month follow up. Prescription data contain information on all dispensed prescriptions including drug name, dispensing date, dosage, drug form, the quantity of the drug dispensed, and the license number of the physician who wrote the prescription. Discontinuation of an opioid will be defined as the lack of a prescription claim for at least 60 days. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Dose reduction or therapeutic switch to an alternate analgesic | 6 months | The magnitude and direction of dose changes will be assessed for people who do not achieve the primary endpoint of complete cessation. New pharmacy dispensing of a prescription for a lower strength, or supply of a reduced quantity of tablets/patches will be considered in the dose reduction calculation. Where substitution to an alternative opioid occurs, opioid doses will be converted to oral morphine equivalents to determine the magnitude and direction of the change. A therapeutic switch will be indicated by a new dispensing for an alternative medication class. |
| The proportion of people achieving opioid doses below 90mg oral morphine equivalents. | 6 months | All opioids will be converted to an oral morphine equivalent dose. The proportion of patients who are prescribed \<90mg of oral morphine equivalent at the end of the 6-month follow up will be compared to baseline. |
Countries
Canada
Outcome results
None listed