Evidence map›Paper›PMID 34266841›Full record

SynthesisBMJ open2021

Determinants of drug prices: a systematic review of comparison studies.

Jules M Janssen Daalen, Anouk den Ambtman, Mark Van Houdenhoven, Bart J F van den Bemt

Open access · goldAbstract readSystematic Review
In one paragraph

Synthesis in BMJ open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
5.3field-weighted citation impact, top 4% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 33 citations in OpenAlex.

  1. Pooled it
  2. Review
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  4. Price determinants and pricing policies concerning potentially innovative health technologies: a scoping review.The European journal of health economics : HEPAC : health economics in prevention and care · 2026
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  8. Assessing the environmental impact of coronary artery bypass grafting to decrease its footprint.European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery · 2025
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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

4 authors at 1 institution in 1 country.

Jules M Janssen DaalenFaculty of Medical Sciences, Radboud University, Nijmegen, The Netherlands jules.m.janssendaalen@radboudumc.nl.ORCID 0000-0001-6290-5882
Anouk den AmbtmanStaff Board of Directors, Sint Maartenskliniek, Nijmegen, The Netherlands.ORCID 0000-0002-3910-0290
Mark Van HoudenhovenStaff Board of Directors, Sint Maartenskliniek, Nijmegen, The Netherlands.
Bart J F van den BemtDepartment of Pharmacy, Sint Maartenskliniek, Nijmegen, The Netherlands.
Radboud University Nijmegen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveIn this systematic review on drug price comparison studies, we report on recent determinants of drug prices in a national and international context to facilitate regulation of drug prices by purchasers and policymakers worldwide. Determinants of drug prices were divided into non-modifiable and modifiable and were categorised as pertaining to a country's income level, pharmaceutical market system and its policies and government. PRIMARY OUTCOME: Determinants of drug prices or price variance.

designWe systematically searched PubMed, EMBASE, Web of Science and Cochrane Library for peer-reviewed articles published between 2004 and 22 July 2020 that reported an association of the primary outcome with one or more determinants. We performed a best-evidence synthesis of these associations for determinants covered in at least three studies.

results31 publications were included. Only one publication described net drug prices and 30 described retail drug prices. Five modifiable determinants were associated with lower retail prices: generic market portion, discounts, tendering policies, central (governmental) purchasing and pricing regulation schemes. The originators market portion and a system in which mark-ups are common were associated with higher retail prices. Retail prices were highest in the USA, even compared with other high-income countries. A positive association between national income level and drug retail prices could not be established among middle-income and high-income countries. Retail prices were highest in low-income countries when adjusted for purchasing power parity.

conclusionsLiterature on determinants of net drug prices is extremely sparse. Various healthcare system interventions, market-specific and governmental regulations are consistently associated with lower retail prices. Some interventions are easily implementable in developing or middle-income countries, such as tendering, central purchasing and fixed pricing regulation schemes. Net drug price comparison studies are needed to overcome the lack of price transparency and to quantify the effectiveness of policy measures on net drug prices.

Indexed as

Drugs, GenericIncomeCosts and Cost AnalysisDrug CostsHumansDrugs, Generichealth economicshealth policyhealth services administration & managementpublic healthqualitative research

Identifiers

PMID34266841
PMCPMC8287090
OpenAlexW3180984197

What OpenQuestion holds

Textmetadata
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.