Evidence map›Paper›PMID 31482621›Full record

Observational studyPharmacoepidemiology and drug safety2019

Effectiveness of two-drug therapy versus monotherapy as initial regimen in hypertension: A propensity score-matched cohort study in the UK Clinical Practice Research Datalink.

Karine Marinier, Pauline Macouillard, Martine de Champvallins, Nicolas Deltour, Neil Poulter, Giuseppe Mancia

Open access · hybridAbstract readComparative StudyObservational Study
In one paragraph

Observational study in Pharmacoepidemiology and drug safety, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 12% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. Guideline
  2. Low-Dose Telmisartan/Amlodipine in Essential Hypertension: A Phase III Trial.Journal of clinical hypertension (Greenwich, Conn.) · 2026
    Trial
  3. Review
  4. Challenges and Perspectives in Optimising the Treatment of Arterial Hypertension: Role of the Ramipril-Amlodipine-Hydrochlorothiazide Single-Pill Combination.High blood pressure & cardiovascular prevention : the official journal of the Italian Society of Hypertension · 2026
    Review
  5. Article
  6. Prevalence and Medical Treatment of Arterial Hypertension and Hypercholesterolemia in Germany: a Nationwide questionnaire-based Survey in Medical Practices.High blood pressure & cardiovascular prevention : the official journal of the Italian Society of Hypertension · 2026
    Article
  7. Article
  8. Observational
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Big data and real-world data-based medicine in the management of hypertension.Hypertension research : official journal of the Japanese Society of Hypertension · 2021
    Review
  18. Observational
  19. Review
  20. Observational
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

6 authors at 4 institutions in 3 countries.

Karine MarinierDepartment of Pharmacoepidemiology and Real World Evidence, Servier, Suresnes, France.ORCID 0000-0002-8715-2220
Pauline MacouillardIT&M Stats, Neuilly-sur-Seine, France.ORCID 0000-0003-0110-2415
Martine de ChampvallinsCenter for Therapeutic Innovation in Cardiology, Servier, Suresnes, France.ORCID 0000-0001-9767-3831
Nicolas DeltourDepartment of Pharmacoepidemiology and Real World Evidence, Servier, Suresnes, France.ORCID 0000-0003-3477-7021
Neil PoulterSchool of Public Health, Imperial College London, London, UK.ORCID 0000-0002-6292-997X
Giuseppe ManciaUniversity Milano-Bicocca, Milano, Italy.ORCID 0000-0003-0942-3176
Servier (France) · FRHôpital américain de paris · FRImperial College London · GBUniversity of Milano-Bicocca · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo compare the effectiveness on blood pressure (BP) of initial two-drug therapy versus monotherapy in hypertensive patients.

methodsUsing the Clinical Practice Research Datalink, linked with Hospital Episode Statistics and Office for National Statistics, we identified a cohort of adults with uncontrolled hypertension, initiating one or two antihypertensive drug classes between 2006 and 2014. New users of two drugs and monotherapy were matched 1:2 by propensity score. Main exposure was "as-treated," ie, until first regimen change. Primary and secondary endpoints were systolic and diastolic BP control and major adverse cardiovascular event (MACE), respectively. Hazard ratios (HR) and 95% confidence intervals (CI) were estimated using Cox proportional hazard models.

resultsOf 54 523 eligible patients, 3256 (6.0%) were initiated to a two-drug combination. Of these, 2807 were matched to 5614 monotherapy users. Mean exposure duration was 12.7 months, with 76.5% patients changing their initial regimen. Two-drug therapy was associated with a clinically significant BP control increase in all hypertensive patients (HR = 1.17 [95%CI: 1.09-1.26]), more so in patients with grade 2-3 hypertension (HR = 1.28 [1.17-1.41]). An increase of 27% in BP control (HR = 1.27 [1.08-1.49]) was observed in patients initiating an ACEi+CCB combination compared with initiators of either single class. No significant association was found between two-drug therapy and MACE. Several sensitivity analyses confirmed the main findings.

conclusionsFew patients initiated therapy with two drugs, reflecting UK guidelines' recommendation to start with monotherapy. This study supports the greater effectiveness of two-drug therapy as the initial regimen for BP control.

Indexed as

AgedAntihypertensive AgentsBlood PressureCohort StudiesDrug Therapy, CombinationFemaleHumansHypertensionMaleMiddle AgedPractice Guidelines as TopicPropensity ScoreRetrospective StudiesTreatment OutcomeUnited KingdomAntihypertensive Agentsblood pressure (BP) controlcomparative effectivenesshypertensioninitial regimenmonotherapypharmacoepidemiologypropensity scoretwo-drug therapy

Identifiers

PMID31482621
PMCPMC6916605
OpenAlexW2971583563

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.