Drug therapy nonadherence rate by therapy class Canada 2019

This statistic shows the rate of nonadherence to prescription drug therapy in Canada in 2019, by therapy class. During this year, 48 percent of Canadian claimants using prescription drugs for diabetes therapy were nonadherent.

Rate of nonadherence to prescription drug therapy in Canada in 2019, by therapy class*

Characteristic	Percentage of nonadherent claimants
Diabetes	48%
Inflammatory conditions	40%
Depression	38%
Multiple sclerosis	36%
High blood pressure	33%
High cholesterol	26%

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Release date

April 2020

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Region

Canada

Survey time period

2019

Supplementary notes

* Claimant refers to each person who submits a prescription drug claim, including all dependents who are eligible for coverage.
Therapy class refers to a grouping of medications based on their most common indication.
Adherence was calculated using the medication possession ratio (MPR), which is the sum of the days’ supply for all fills of oral medications in a particular period, divided by the number of days in the period, for any patient with three or more fills of the drug during the period. Patients with an MPR of less than 0.8 or 80% were considered nonadherent.

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