Trials

BioMed Central Ltd · United Kingdom · Est. 1967

ISSN1745-6215eISSN1745-6215

SJR Q2✓ WOS SCIE✓ Scopus / SJR✓ DOAJ✓ Open Access

Impact Factor & Quartile · Web of Science (JCR)

✓ Indexed in the Web of Science Core Collection (SCIE) — Clarivate publishes an official Journal Impact Factor and JCR quartile for this journal.

See the official Impact Factor & quartile on the journal’s page ↗

The Impact Factor & JCR quartile are licensed by Clarivate — we link you to the official source instead of reprinting a number that can go out of date. Open metrics below: SCImago Q2. Source: Clarivate Journal Citation Reports.

📊 Standing in its field

Where this journal ranks among others in the same subject area.

SJR · Scopus

Top 50% in field

Clarivate’s JCR quartile is a separate ranking and may differ

SJR Scorei

0.892

H-Indexi

131

SNIPi

0.794

Total Worksi

12,060

Total Citationsi

217,496

2yr Mean Citednessi

1.88

Open Impact Factor alternative

Retractions

Source: Retraction Watch

Aims & Scope

Subject areas: Medicine, Research & Experimental; Medicine (miscellaneous); Pharmacology (medical).

General Information

Country / RegionUnited Kingdom

Primary LanguageEnglish

1st Year Published1967

FrequencyAnnual

StatusActive (last: 2026)

Total Publications12,060

Publisher OrgSpringer Science+Business Media

OA Since2005

Visit Journal Website

Submission Info

Peer ReviewOpen

OA LicenseCC BY, CC BY-NC-ND

OA Rate—

Ethics & Quality

COPE Member✗ No

OASPA Member✗ No

Not on Predatory Lists✓ Yes

Plagiarism Detection✓ Yes

📦 Long-term Preservation

LOCKSSPMCCLOCKSS

Think.Check.Submit Compliance

thinkchecksubmit.org

10/11 · 91%

✅

Do you know the journal / publisher?

BioMed Central Ltd

✅

Does the journal have a website?

✓ Linked

✅

Is the ISSN verified?

1745-6215 / 1745-6215

✅

Indexed in a trusted database?

WoS, Scopus, DOAJ, PubMed

✅

Peer review process documented?

Open

❌

Follows ethical publishing standards (COPE)?

N/A

✅

Not on predatory/blacklists?

✓ Clean

✅

Long-term digital preservation?

LOCKSS, PMC, CLOCKSS

✅

Plagiarism detection in place?

Yes

✅

Listed in DOAJ (verified OA)?

DOAJ verified

✅

Primary language documented?

English

A twelfth criterion — whether APC fees are clearly disclosed — is not scored here; it is left out of the total rather than counted as a failure. Publication charges appear in the metrics card above.

Based on the Think.Check.Submit framework by DOAJ, COPE & OASPA. All data from verified open sources.

Publication & Citation Trend

Articles published

Citations received

842

17k

2019

19k

2020

970

14k

2021

1.1k

11k

2022

823

5.8k

2023

858

3.8k

2024

679

945

2025

580

2026

Source: OpenAlex · Each year’s green bar = citations earned by that year’s papers, counted to date — so recent years look lower simply because their papers haven’t had time to be cited yet.

SJR Quartile by Discipline

Scimago ranks this journal separately in each subject category — its quartile can differ by discipline.

Medicine (miscellaneous)Q2

Pharmacology (medical)Q2

Subject Classification

Web of Science Categories

Medicine, Research & Experimental

Scopus Categories

Pharmacology (medical)Medicine (miscellaneous)

Research Topics (OpenAlex)

Ethics in Clinical ResearchMeta-analysis and systematic reviewsStatistical Methods in Clinical TrialsHealth Systems, Economic Evaluations, Quality of LifeHealth Policy Implementation ScienceDigital Mental Health InterventionsAcupuncture Treatment Research StudiesStroke Rehabilitation and RecoveryMental Health and Patient InvolvementMobile Health and mHealth Applications

Frequently asked questions about Trials

Is Trials a predatory journal?

PubScope has no integrity flags on record for Trials: it is indexed in Web of Science, Scopus, DOAJ, and is not on DOAJ's withdrawn list. Indexing is a transparency signal, not a guarantee — always confirm fit and policies before submitting.

What is the impact factor of Trials?

Trials is indexed in the Web of Science Core Collection, so Clarivate publishes an official Journal Impact Factor for it (since the 2023 Journal Citation Reports, every Core Collection journal — including Arts & Humanities and Emerging Sources titles — receives one). PubScope links to Clarivate's official source rather than reprinting the number, which can be out of date. Its open 2-year mean citedness is 1.88.

Is Trials indexed in Scopus and Web of Science?

Trials is indexed in Web of Science, Scopus, DOAJ.

What is the aims and scope of Trials?