Evidence map›Paper›PMID 18548150›Full record

ArticleThe Canadian journal of cardiology2008

Trends in antihypertensive drug prescriptions and physician visits in Canada between 1996 and 2006.

Brenda R Hemmelgarn, Guanmin Chen, Robin Walker, Finlay A McAlister, Hude Quan, Karen Tu, Nadia Khan, Norm Campbell

Abstract readComparative Study
In one paragraph

Article in The Canadian journal of cardiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing 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

27 citing papers in PubMed.

  1. Trial
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  7. ACSC Indicator: testing reliability for hypertension.BMC medical informatics and decision making · 2017
    Article
  8. Review
  9. Article
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  11. Review
  12. Article
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  14. Harmonization of guidelines for the prevention and treatment of cardiovascular disease: the C-CHANGE Initiative.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2011
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. 2010 Canadian Hypertension Education Program recommendations: An annual update.Canadian family physician Medecin de famille canadien · 2010
    Article
  20. Review
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

8 authors.

Brenda R HemmelgarnDepartment of Community of Health Sciences, University of Calgary, Calgary, Alberta. brenda.hemmelgarn@calgaryhealthregion.ca
Guanmin Chen
Robin Walker
Finlay A McAlister
Hude Quan
Karen Tu
Nadia Khan
Norm Campbell

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn 1999, the Canadian Hypertension Education Program (CHEP) was launched to develop and implement evidence-based hypertension guidelines.

objectivesTo determine temporal trends in antihypertensive drug prescribing and physician visits for hypertension in Canada, and correlate these trends with CHEP recommendations.

methodsLongitudinal drug data (Intercontinental Medical Statistics [IMS] CompuScript database; IMS Health Canada) were used to examine prescriptions over an 11-year period (1996 to 2006) for five major cardiovascular drug classes. The IMS Canadian Disease and Therapeutic Index database was used to determine trends in physician office visits for hypertension.

resultsPrescriptions for antihypertensive agents increased significantly over the 11-year period (4054% for angiotensin receptor blockers, 127% for thiazide diuretics, 108% for angiotensin-converting enzyme inhibitors, 87% for beta-blockers and 55% for calcium channel blockers). Time series analyses demonstrated increases in the growth rate for all drug classes, with the greatest annual change in prescriptions occurring during the 1999 to 2002 time period (except in angiotensin receptor blockers). An increase in prescriptions for fixed-dose combination products occurred, which was temporally related to the change in CHEP recommendations encouraging their use in 2001. The proportion of physician office visits for hypertension increased significantly from 4.9% in 1995 to 6.8% in 2005 (P<0.001).

conclusionsThe largest increase in antihypertensive drug prescribing occurred in the period immediately following implementation of CHEP (1999 to 2002). Although prescribing rates are still increasing, the rate of change has decreased, suggesting that the treatment market for hypertension may be becoming saturated. The impact of these changes on blood pressure control and clinical outcomes remains to be determined.

Indexed as

AdultAgedAntihypertensive AgentsCanadaDrug PrescriptionsHumansHypertensionMiddle AgedOffice VisitsOutcome Assessment, Health CarePatient CompliancePrevalenceRetrospective StudiesAntihypertensive Agents

Identifiers

PMID18548150
PMCPMC2643197

What OpenQuestion holds

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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.