Journal profile · MEDICINE, GENERAL & INTERNAL
Singapore Medical Journal
ISSN 0037-5675 · eISSN 2737-5935 · Singapore Medical Association · SINGAPORE · Monthly · Founded 1960
Singapore Medical Journal: CAS Zone 4 · Medicine (2025 upgraded edition); impact factor 2.18; JCR Q2 (journal website); diamond open access (no APC); no APC; median 103 days to acceptance (61 articles, last 24 months); community-reported acceptance: easy; 141 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
Singapore Medical Journal is published by Singapore Medical Association and is in Zone 4 of Medicine in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are Cardiac Arrest and Resuscitation, COVID-19 and healthcare impacts and Trauma and Emergency Care Studies, together about 18.9% of its articles. Its main subfields are Emergency Medicine and Surgery. (generated from OpenAlex topic counts and CAS ranking data)
The Singapore Medical Journal (SMJ) is the monthly publication of Singapore Medical Association (SMA). The Journal aims to advance medical practice and clinical research by publishing high-quality articles that add to the clinical knowledge of physicians in Singapore and worldwide. SMJ is a general medical journal that focuses on all aspects of human health. The Journal publishes commissioned reviews, commentaries and editorials, original research, a small number of outstanding case reports, continuing medical education articles (ECG Series, Clinics in Diagnostic Imaging, Pictorial Essays, Practice Integration & Life-long Learning [PILL] Series), and short communications in the form of letters to the editor.
Source: LetPub
Research area (LetPub): MEDICINE, GENERAL & INTERNAL
Editor-in-chief Ang Tiing LeongPublisher website
Editorial board by country: none in mainland China; most named Singapore 8, Malaysia 2 (10 members with a country) Editorial board ↗Publisher website ·
Main research topics OpenAlex counts of recent articles; shares are approximate
- Cardiac Arrest and ResuscitationMedicine7.5%
- COVID-19 and healthcare impactsMedicine6.1%
- Trauma and Emergency Care StudiesMedicine5.4%
- COVID-19 Clinical Research StudiesMedicine5.1%
- Innovations in Medical EducationMedicine5%
- Total Knee Arthroplasty OutcomesMedicine4.6%
- Shoulder Injury and TreatmentMedicine4.4%
- Sepsis Diagnosis and TreatmentMedicine4.2%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Medicine Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Medicine | Zone 4 |
| Minor | Medicine, General & Internal | Zone 4 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Medicine Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Medicine | Zone 4 |
| Minor | Medicine, General & Internal | Zone 3 |
Top journal: noReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Medicine Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Medicine | Zone 4 |
| Minor | Medicine, General & Internal | Zone 4 |
Top journal: noReview journal: no
JCR / CiteScore quartiles on the journal's website
- JCR Q2 · MEDICINE, GENERAL & INTERNAL · rank 85/336
Publisher-reported: JCR figures are Clarivate's and CiteScore figures Scopus's to confirm; both are a different system from the CAS zones.Publisher website
Database indexing
SCIEScopusDOAJLetPub
International journal early-warning lists: not listed in any editionLetPub
Editions, and major and minor categories, are shown separately and never merged into one zone; check which edition your institution uses before you submit or report.
Metrics
Impact metrics and publication volume
Impact
- Impact factor
- 2.18LetPub ·
- Impact factor (publisher)
- 2.7Publisher website ·
- CiteScore 2026-06
- 3.1LetPub ·
- SJR 2026-06
- 0.48LetPub ·
- SNIP 2026-06
- 0.74LetPub ·
- h-index
- 53LetPub ·
- h-index
- 65OpenAlex ·
- i10-index
- 775OpenAlex ·
- 2-year mean citedness
- 1.94OpenAlex ·
- Self-citation rate
- 3.7%LetPub ·
- Share of gold OA articles
- 100%LetPub ·
Volume
- Articles per year
- 82LetPub ·
Articles by year OpenAlex count · 2,505 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 117 | 117 | 46 |
| 2025 | 141 | 141 | 200 |
| 2024 | 166 | 166 | 576 |
| 2023 | 221 | 221 | 792 |
| 2022 | 118 | 118 | 2,143 |
| 2021 | 239 | 239 | 1,565 |
Sources count differently and were observed at different times, so each source's own value is kept; "publisher" marks figures from the journal's website.
Review & acceptance
Review time and acceptance
Review time from article dates manuscript dates registered with Crossref · to
103 daysMedian, submission to acceptance · P25–P75 32 days – 156 days
- Acceptance to online
- median 137 days (61 articles)
- Submission to online
- median 244 days
- Sample
- 61 articles with submission and acceptance dates (287 in the window); the latest was accepted on
Only articles that were accepted and published are counted, not the time spent on rejected manuscripts, so this usually runs longer than a publisher's "time to first decision".
Other sources
- Average review time (community reports)
- 3–6 weeksLetPub ·
- Average acceptance (community reports)
- EasyLetPub ·
- Submission to publication (journal-reported)
- about 17 weeksDOAJ ·
- Peer review
- Double anonymous peer reviewDOAJ
Community reports come from authors' own submissions (confidence 0.5) and are not a promise from the journal; for publisher figures, the journal's own definitions apply.
Fees & open access
APC and open-access policy
Diamond open access (no APC)DOAJ
Every article is open access and authors pay no article processing charge.
| Source | APC | Fee waiver | License | Observed |
|---|---|---|---|---|
| DOAJ | No APC | No | CC BY-NC-SA |
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Profile
Publication details and official links
- Publisher
- Singapore Medical Association
- Country or region
- SINGAPORE
- Language
- English
- Frequency
- Monthly
- Founded
- 1960
- ISSN
- 0037-5675
- Electronic ISSN
- 2737-5935
- Latest issue on the website
- Volume 67, Issue 8 (August 2026)
- Official links
- Journal homepage ↗DOAJ
- Submission system ↗Publisher website
- Author guidelines ↗DOAJ
- Aims & Scope ↗DOAJ
- APC information ↗DOAJ
- Open access statement ↗DOAJ
- License & copyright ↗DOAJ
- Peer review process ↗DOAJ
- Editorial board ↗DOAJ
- Plagiarism policy ↗DOAJ
FAQ
Frequently asked questions about Singapore Medical Journal
What CAS zone is Singapore Medical Journal in?
In the 2025 upgraded edition of the CAS Journal Ranking, Singapore Medical Journal is in Zone 4 of Medicine, and in Zone 4 of the minor category Medicine, General & Internal. In the 2026 Xinrui edition it is in Zone 4 of Medicine. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of Singapore Medical Journal?
The latest impact factor listed by LetPub is 2.18; CiteScore 3.1, h-index 65.
How long does peer review take at Singapore Medical Journal?
Based on the dates recorded on 61 articles published between October 2024 and October 2026 (the last 24 months), the median time from submission to acceptance is 103 days (interquartile range 32–156 days); authors report an average review time of 3–6 weeks; the community-reported acceptance is “Easy”. Article statistics cover accepted papers only, publisher figures follow the journal's own definitions, and community reports come from authors' own submissions; none is a promise from the journal.
What JCR quartile is Singapore Medical Journal in?
The journal's website gives JCR Q2; by category, MEDICINE, GENERAL & INTERNAL Q2 (85/336). JCR quartiles are Clarivate's to confirm and a different system from the CAS zones; in the CAS ranking the journal is in Zone 4 of Medicine.
Where are the editorial board members of Singapore Medical Journal based?
Of the 10 board members whose country the journal's board page names, none are in mainland China; the countries named most often are Singapore (8) and Malaysia (2). Counted from the institutions listed on the board page; for reference only.
Which databases index Singapore Medical Journal?
According to LetPub and DOAJ records, Singapore Medical Journal is indexed in SCIE, Scopus and DOAJ.
Is Singapore Medical Journal open access, and what is the APC?
Singapore Medical Journal is a diamond open-access journal (no APC). It charges no article processing charge.
Sources and updates
The facts on this page come from LetPub, OpenAlex, Publisher website, DOAJ; every figure is tagged with its source and the date it was observed, and conflicting values are kept per source. LetPub source page: view ↗ (archived 2026-08-24). Last updated: .