Clinical Trial Details
— Status: Terminated
Administrative data
NCT number |
NCT00356655 |
Other study ID # |
1-Gardner |
Secondary ID |
|
Status |
Terminated |
Phase |
N/A
|
First received |
|
Last updated |
|
Start date |
July 2006 |
Est. completion date |
May 2008 |
Study information
Verified date |
May 2008 |
Source |
University of Alberta |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Interventional
|
Clinical Trial Summary
This a comparative study of enhanced pharmacist care and regular care of patients starting on
antidepressants. When providing participants with enhanced care pharmacists will use the
Health Professional's Antidepressant Communications Tool (Health PACT) a minimum of three
times during face-to-face discussions. This tool was developed specifically for this study.
All participants will be followed for 26 weeks and will be assessed for duration of use of
their antidepressant, adherence to treatment, and clinical response.
Description:
This proposal describes a combined observational study (Phase I) and randomized controlled
trial (Phase II). The primary aim of the observational study is to determine the disorders,
in particular the types of depression, for which family physicians prescribe antidepressants.
The primary aim of the randomized controlled trial (RCT) is to compare the effect of a brief
psycho-educational intervention by pharmacists with usual care on antidepressant persistence.
Subjects (n=621 phase 1, n=106 phase 2) will be patients presenting to a pharmacy in Edmonton
with a prescription for an antidepressant from a family physician and meeting the following
criteria: no antidepressants taken in the preceding six months; 18 years of age or older, and
fluent in English. Subjects will be interviewed using modified versions of the depression,
generalized anxiety disorder and panic disorder sections of the Diagnostic Interview
Schedule; the Beck Depression Inventory; the Beck Anxiety Inventory; and a question on recent
stressful life events. For Phase 1 the proportion of subjects with the following DSM-IV
diagnoses will be estimated: major depression, "minor depression," generalized anxiety
disorder, panic disorder; minor depression will be categorized into "adjustment disorder with
depressed mood" and "adjustment disorder with mixed anxiety and depressed mood". The family
doctor will be contacted and asked for the diagnosis that prompted the antidepressant
prescription.
Subjects with DSM IV depression will be invited to participate in Phase 2. Individuals will
be randomized to a pharmacist intervention with the Health PACT, or to usual care. Using the
newly-developed Antidepressant Compliance Questionnaire, information on predictors of
adherence will be collected at the baseline interview. At weeks 4, 8, 16 and 26, subjects
will be contacted by phone and questioned on antidepressant adherence and persistence. At
week 8 (or the exit interview if a subject leaves the study early), we will administer the
Beck Depression Inventory and the Beck Anxiety Inventory. The primary outcome is treatment
persistence, defined as the time to stop antidepressant use. Adherence, defined by the
medication possession ratio (MPR), will be also be measured.