Canadian Study of Adherence Outcomes in Adalimumab Patients: Three-Year Results from the COMPANION Study
Author(s): ,
John K. Marshall
Affiliations:
MD
,
Louis Bessette
Affiliations:
MD
,
Gerald Lebovic
Affiliations:
PhD
Brad Millson
Affiliations:
.
Canadian Pharmacists Conference ePoster Library. Latour M. Jun 3, 2017; 174240
Dr. Martin Latour
Dr. Martin Latour
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Abstract
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Objectives
Adalimumab (ADL) is a TNF-alpha inhibitor indicated for various inflammatory autoimmune diseases. Patients receiving ADL in Canada can enroll in the AbbVie Care patient support program (PSP). This retrospective study assessed the impact of PSP services and patient characteristics on persistence and adherence to ADL over a 3-year period.

Methods
Upon probabilistic linkage to the IMS longitudinal pharmacy transaction database (LRx), PSP patients starting ADL between July 2010 and August 2012 were tracked for 36 months to calculate persistence (end if >90 days without therapy). Cox and multivariable logistic regression models provided hazard ratios (HR) and adjusted odds ratios (OR) to measure the association between patient characteristics/PSP services and persistence and adherence, respectively. Adherence was measured using the medication possession ratio (MPR) (>=80% MPR). Persistence analyses over 36 months were done in patients who were persistent up to when specific PSP services were introduced.

Results
In the overall cohort (N=4,772), older age groups had significantly greater odds of adherence (40-49, 50-59, 60-69, 70+; OR=1.3, 1.4, 1.4, 2.1; p<0.05 for all comparisons) relative to the 30-39 years age group. In patients (n=2,866) who were persistent when ongoing care coach calls became available, those receiving this service were 65% less likely to stop therapy (HR=0.35, p<0.01) and 38% more likely to be adherent (OR = 1.38, p<0.01) compared to those without it.

Conclusion
Ongoing care coach calls provided by the AbbVie Care PSP significantly correlate with greater patient persistence and adherence over 36 months. Patients aged between 30 and 39 years appear to have lower adherence compared to older age groups. These results may help refine services that improve treatment adherence.

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