Evidence map›Paper›PMID 24948750›Full record

ArticleBMJ open2014

Are statin trials in diabetes representative of real-world diabetes care: a population-based study on statin initiators in Finland.

Päivi Ruokoniemi, Reijo Sund, Martti Arffman, Arja Helin-Salmivaara, Risto Huupponen, Ilmo Keskimäki, Tuulikki Vehko, Maarit Jaana Korhonen

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
3.8field-weighted citation impact, top 7% of its field
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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Current perspectives on lipid management in diabetic kidney disease: Can fibrates offer advantages over statins for renal outcomes?Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2026
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. 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

8 authors at 3 institutions in 1 country.

Päivi RuokoniemiDepartment of Pharmacology, Drug Development and Therapeutics, FI-20014 University of Turku, Turku, Finland.
Reijo SundService Systems Research Unit, National Institute for Health and Welfare, Helsinki, Finland.
Martti ArffmanService Systems Research Unit, National Institute for Health and Welfare, Helsinki, Finland.
Arja Helin-SalmivaaraDepartment of Pharmacology, Drug Development and Therapeutics, FI-20014 University of Turku, Turku, Finland.
Risto HuupponenDepartment of Pharmacology, Drug Development and Therapeutics, FI-20014 University of Turku, Turku, Finland Unit of Clinical Pharmacology, Turku University Hospital, Turku, Finland.
Ilmo KeskimäkiSocial and Health Services, National Institute for Health and Welfare, Helsinki, Finland School of Health Sciences, University of Tampere, Tampere, Finland.
Tuulikki VehkoService Systems Research Unit, National Institute for Health and Welfare, Helsinki, Finland.
Maarit Jaana KorhonenDepartment of Pharmacology, Drug Development and Therapeutics, FI-20014 University of Turku, Turku, Finland.
University of Turku · FIFinnish Institute for Health and Welfare · FITampere University · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo assess the representativeness of the Heart Protection Study (HPS) and the Collaborative Atorvastatin Diabetes Study (CARDS) for incident statin users.

designA population-based analysis with linked register data.

settingFinland. POPULATION: 56 963 patients with diabetes initiating statin use from 2005 to 2008.

main outcome measuresWe determined the proportions of real-world patients who fulfilled the eligibility criteria for HPS and CARDS trials and assessed the cardiovascular disease (CVD) event rates, assumed to reflect the background CVD risk, for those eligible and ineligible. We used descriptive statistics to identify the patient characteristics, lipid-lowering interventions and adherence to statin therapy.

resultsOf the real-world patients, 57% (N=32 582) fulfilled the eligibility criteria for HPS (DM) and 49% (N=20 499) of those without CVD for CARDS. The patients ineligible for HPS (DM) had a higher cumulative risk for CVD events than those eligible, whereas regarding CARDS the cumulative risks were of similar magnitude. The overall CVD event rates seemed to be comparable to those in the reviewed trials. Both trials were under-representative of women and users of antihypertensive agents and metformin. 27% and 29% of real-world patients had an initial statin dose corresponding to <20 mg of simvastatin. The proportions of patients who were deemed adherent were 57% in the real world and 85% in both trials.

conclusionsOnly half of the real-world patients would have qualified for the HPS (DM) and CARDS, limiting their representativeness for clinical practice. Women and users of antihypertensive agents and metformin were under-represented in both trials. These deviations reflect the changes in diabetes treatment over the years and are not expected to modify the average treatment effects of statins on CVD. Prescribing of lower statin doses in clinical practice than used in the trials and lower adherence may, however, attenuate the benefits in the real world.

Indexed as

AdultAgedAntihypertensive AgentsClinical Trials as TopicDiabetes MellitusFemaleFinlandHumansHydroxymethylglutaryl-CoA Reductase InhibitorsMaleMiddle AgedAntihypertensive AgentsHydroxymethylglutaryl-CoA Reductase Inhibitorsadherencediabetesrandomised controlled trialrepresentativenessstatin

Identifiers

PMID24948750
PMCPMC4067810
OpenAlexW2170243742

What OpenQuestion holds

Texttitle and abstract
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.