Evidence map›Paper›PMID 29178960›Full record

ArticleImplementation science : IS2017

The impact of a physician detailing and sampling program for generic atorvastatin: an interrupted time series analysis.

Heather C Worthington, Lucy Cheng, Sumit R Majumdar, Steven G Morgan, Colette B Raymond, Stephen B Soumerai, Michael R Law

Abstract read
In one paragraph

Article in Implementation science : IS, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Heather C WorthingtonCentre for Health Services and Policy Research, School of Population and Public Health, Faculty of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada. heather.worthington@ubc.ca.ORCID http://orcid.org/0000-0001-9394-3347
Lucy ChengCentre for Health Services and Policy Research, School of Population and Public Health, Faculty of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada.
Sumit R MajumdarDepartment of Medicine, University of Alberta, Edmonton, Alberta, Canada.
Steven G MorganSchool of Population and Public Health, Faculty of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada.
Colette B RaymondManitoba Centre for Health Policy, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.
Stephen B SoumeraiDepartment of Population Medicine, Harvard Medical School, Boston, MA, USA.
Michael R LawCentre for Health Services and Policy Research, School of Population and Public Health, Faculty of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada.

Funding

Translational Research Core - Health Engagement & Action Translational (HEAT)P30DK092924 · NIDDK · KAISER FOUNDATION RESEARCH INSTITUTE · PI Alyce Sophia Adams, HILARY Kessler SELIGMAN · 2011 to 2026
$9.2M
Institute of Health Services and Policy Research MOP-286790NIDDK NIH HHS P30 DK092924
6 · The paper itself

Abstract

backgroundIn 2011, Manitoba implemented a province-wide program of physician detailing and free sampling for generic atorvastatin to increase use of this generic statin. We examined the impact of this unique combined program of detailing and sampling for generic atorvastatin on the use and cost of statin medicines, market share of generic atorvastatin, the choice of starting statin for new users, and switching from a branded statin to generic atorvastatin.

methodsWe conducted a retrospective study of Manitoba insurance claims data for all continuously enrolled patients who filled one or more prescriptions for a statin between 2008 and 2013. Data were linked to physician-level data on the number of detailing visits and sample provision. We used interrupted time series analyses to assess policy-related changes in the use and cost of statin medicines, market share of generic atorvastatin, the choice of starting statin for new users, and switching from a branded statin to generic atorvastatin.

resultsThe detailing program reached 31% (651/2103) of physicians who prescribed a statin during the study period. Collectively, these physicians prescribed 61% of statins dispensed in the province. Free sample cards were provided to 61% (394/651) of the detailed physicians. The program did not change the level or trend in the overall statin use rate and the total cost of statins or increase the number of patients switching from another branded statin to generic atorvastatin. We found the program had a small impact on atorvastatin's market share of new prescriptions, with a level increase of 2.6%.

conclusionsThough physician detailers were skilled at targeting high-prescribing physicians, a combined program of detailing visits and sample provision for generic atorvastatin did not lower overall statin costs or lead to switching from branded statins to the generic. The preceding introduction of generic atorvastatin appeared sufficient to modify prescribing patterns and decrease costs.

Indexed as

AdultAgedAnticholesteremic AgentsAtorvastatinDrugs, GenericFemaleHumansInterrupted Time Series AnalysisMaleManitobaMiddle AgedPhysiciansPractice Patterns, Physicians'Retrospective StudiesAnticholesteremic AgentsAtorvastatinDrugs, GenericAtorvastatinDetailingGeneric drugsSampling

Identifiers

PMID29178960
PMCPMC5702229

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.