Journal profile · RESPIRATORY SYSTEM
Respiratory Investigation
ISSN 2212-5345 · eISSN 2212-5353 · Elsevier
Respiratory Investigation: CAS Zone 4 · Medicine (2025 upgraded edition); impact factor 2.1 (journal website); hybrid open access; APC about USD 3,000; median 111 days to acceptance (105 articles, last 24 months); acceptance rate 44% (journal website); 216 articles in 2025; indexed in ESCI and Scopus.
Scope
Aims, scope and focus
Respiratory Investigation is published by Elsevier 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 Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis, Chronic Obstructive Pulmonary Disease (COPD) Research and Lung Cancer Diagnosis and Treatment, together about 35.1% of its articles. Its main subfields are Pulmonary and Respiratory Medicine. (generated from OpenAlex topic counts and CAS ranking data)
Official Journal of The Japanese Respiratory SocietyRespiratory Investigation formerly known as Nihon Kokyuki Gakkaizasshi (The Journal of the Japanese Respiratory Society) is the official English - language journal of the Japanese Respiratory Society. The journal published original manuscripts on clinical investigations of a variety of respiratory diseases and medicines, along with articles concerning basic physiology, pathology, and cellular/molecular biology relating to any pulmonary diseases. Our journal is particularly interested in publishing articles that focus on the diversity of disease manifestations based on genetic and/or environmental differences between the East and West. The journal will consider peer review and publish of pediatric pulmonology, if the manuscript closely related to respiratory disease in adults. Article types accepted include Original Articles, Rapid Communications, Reviews and Guidelines, Editorials, and Letters to the editor. A case report could be exceptionally accepted only when it contains significant scientific novelty and/or important clinical relevance. The journal enthusiastically welcomes contributions not only from Japanese members of our Society but also from non-members hailing from neighboring countries in Asia and anywhere worldwide.Please prepare manuscripts in conformance with the Uniform Requirements for Manuscripts Submitted to Biomedical Journals (http://www.icmje.org/urm_main.html.)
From the journal's Aims & Scope
Research area (LetPub): RESPIRATORY SYSTEM
Editor-in-chief Yano SeijiPublisher website
Editorial board by country: none in mainland China; most named Japan 65, United States 5, Italy 4, United Kingdom 2, Netherlands 2 (81 members with a country) Editorial board ↗Publisher website ·
Main research topics OpenAlex counts of recent articles; shares are approximate
- Interstitial Lung Diseases and Idiopathic Pulmonary FibrosisMedicine16.7%
- Chronic Obstructive Pulmonary Disease (COPD) ResearchMedicine11.8%
- Lung Cancer Diagnosis and TreatmentMedicine6.6%
- Asthma and respiratory diseasesMedicine6.1%
- Lung Cancer Treatments and MutationsMedicine5.3%
- Respiratory Support and MechanismsMedicine4.9%
- Respiratory and Cough-Related ResearchMedicine3.9%
- Tracheal and airway disordersMedicine3.5%
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 | Respiratory System | Zone 4 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Medicine Zone 3
| Level | Category | Zone |
|---|---|---|
| Major | Medicine | Zone 3 |
| Minor | Respiratory System | Zone 4 |
Top journal: noReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Not covered
Not covered by this edition.
Database indexing
ESCIScopusLetPub
International journal early-warning lists: not listed in any editionLetPub
Indexing the journal's website claims
PubMedPublisher website
Other: Crossref
As the journal's website lists them, not checked against each database; for Web of Science editions the records above apply.
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 (publisher)
- 2.1Publisher website ·
- CiteScore 2026-06
- 3.1LetPub ·
- CiteScore (publisher)
- 3.1Publisher website ·
- SJR 2026-06
- 0.57LetPub ·
- SNIP 2026-06
- 0.85LetPub ·
- h-index
- 54OpenAlex ·
- i10-index
- 477OpenAlex ·
- 2-year mean citedness
- 2.25OpenAlex ·
- Self-citation rate
- 9.5%LetPub ·
- Share of gold OA articles
- 28.92%LetPub ·
Volume
- Articles per year
- 195LetPub ·
Articles by year OpenAlex count · 1,553 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 156 | 53 | 28 |
| 2025 | 216 | 113 | 425 |
| 2024 | 200 | 107 | 833 |
| 2023 | 117 | 54 | 851 |
| 2022 | 100 | 50 | 762 |
| 2021 | 134 | 52 | 1,651 |
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 PubMed · to
111 daysMedian, submission to acceptance · P25–P75 72 days – 137 days
- Acceptance to online
- median 7 days (105 articles)
- Submission to online
- median 121 days
- Sample
- 105 articles with submission and acceptance dates (450 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
- Acceptance rate (publisher)
- 44%Publisher website ·
- Submission to first decision
- 14 daysPublisher website ·
- First decision after review
- 38 daysPublisher website ·
- Submission to acceptance
- 108 daysPublisher website ·
- Peer review
- Single anonymous peer reviewPublisher website
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
Hybrid open accessLetPub
A subscription journal in which authors can pay to publish their article open access.
| Source | APC | Fee waiver | License | Observed |
|---|---|---|---|---|
| OpenAlex | USD 3,000 / EUR 2,810 / GBP 2,400 / JPY 372,090 | — | — | |
| Publisher website | USD 3,000 | — | — |
A hybrid journal charges the APC only when the author chooses open access; publishing under the subscription model is usually free.
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Submission
Article types and submission policies (journal website)
What to prepare4 items from the author guidelines
- Abstract
- ≤ 250 words
- Keywords
- ≤ 5
- Manuscript length
- ≤ 3,000 words
- Not considered
- Protocols with complete data collection
Article types accepted9, with length limits
- case reportThe Journal publishes Original Articles, Rapid Communications, Reviews, Mini-Reviews, Protocols, Guidelines and Statements, Letters, and rarely Case Reports.main text ≤ 1,500 words · abstract ≤ 100 words
- guideline and statementThe Journal publishes Original Articles, Rapid Communications, Reviews, Mini-Reviews, Protocols, Guidelines and Statements, Letters, and rarely Case Reports.Length not stated
- letterThe Journal publishes Original Articles, Rapid Communications, Reviews, Mini-Reviews, Protocols, Guidelines and Statements, Letters, and rarely Case Reports.main text ≤ 600 words
- mini reviewthan 250 words. Keywords are required. Mini Review The length is less than 3,200 words including tables and figures;one table/figure is counted asmain text ≤ 3,200 words · abstract ≤ 250 words
- original articleThe Journal publishes Original Articles, Rapid Communications, Reviews, Mini-Reviews, Protocols, Guidelines and Statements, Letters, and rarely Case Reports.main text ≤ 3,000 words · abstract ≤ 250 words
- protocolThe Journal publishes Original Articles, Rapid Communications, Reviews, Mini-Reviews, Protocols, Guidelines and Statements, Letters, and rarely Case Reports.main text ≤ 2,500 words · abstract ≤ 250 words
- protocolsThe Journal publishes Original Articles, Rapid Communications, Reviews, Mini-Reviews, Protocols, Guidelines and Statements, Letters, and rarely Case Reports.Length not stated
- rapid communicationThe Journal publishes Original Articles, Rapid Communications, Reviews, Mini-Reviews, Protocols, Guidelines and Statements, Letters, and rarely Case Reports.main text ≤ 1,200 words · abstract ≤ 150 words
- reviewThe Journal publishes Original Articles, Rapid Communications, Reviews, Mini-Reviews, Protocols, Guidelines and Statements, Letters, and rarely Case Reports.main text ≤ 6,000 words · abstract ≤ 250 words
Policy excerpts from the journal's websiteAI use, Authorship, Conflicts of interest, License & copyright, Open access, Peer review, Preprints
- AI use Declaration of generative AI in scientific writing
Authors must declare the use of generative AI tools in the manuscript preparation process upon submission of the paper.Generative AI and AI-assisted technologies (“AI tools”) have been rapidly adopted in research and scholarly publishing, offering significant benefits while requiring clear standards for responsible and transparent use.Authors preparing a manuscript for this journal may use AI tool…
Source ↗Publisher website ·- Authorship Authorship
The Journal follows the recommendations formulated by the International Committee of Medical Journal Editors regarding criteria for authorship. Accordingly, each person listed as an author or coauthor for a submitted manuscript must meet all four criteria. An author or coauthor shall have:• Substantial contributions to the conception or design of the work, or acquisition, analysis or interpretatio…
Source ↗Publisher website ·- Conflicts of interest Conflict of interest
All authors are required to disclose any financial relationship (within 3 calendar years preceding the current year) with any biotechnology manufacturer, pharmaceutical company, or other commercial entity that has an interest in the subject matter or materials discussed in the manuscript. The matters requiring disclosure are outlined in the JRS Bylaws Concerning Conflict of Interest Policy in Clin…
Source ↗Publisher website ·- License & copyright Copyright
Upon acceptance of an article, authors will be asked to complete a 'Journal Publishing Agreement' (see more information on this). An e-mail will be sent to the corresponding author confirming receipt of the manuscript together with a 'Journal Publishing Agreement' form or a link to the online version of this agreement.Subscribers may reproduce tables of contents or prepare lists of articles includ…
Source ↗Publisher website ·- Open access Open access
Supports open access Model summary
Please visit our Open Access page for more information about open access publishing in this journal.
Source ↗Publisher website ·- Peer review Peer review
single anonymized review process Model summary
This journal operates a single anonymized review process. All contributions will be initially assessed by the editor for suitability for the journal. Papers deemed suitable are then typically sent to a minimum of two independent expert reviewers to assess the scientific quality of the paper. The Editor is responsible for the final decision regarding acceptance or rejection of articles. The Editor'…
Source ↗Publisher website ·- Preprints Preprint references
Where a preprint has subsequently become available as a peer-reviewed publication, the formal publication should be used as the reference. If there are preprints that are central to your work or that cover crucial developments in the topic, but are not yet formally published, these may be referenced. Preprints should be clearly marked as such, for example by including the word preprint, or the nam…
Source ↗Publisher website ·
Excerpts are quoted from the journal's website; "model summary" lines are written by Workers AI and checked against the text. The journal's website is authoritative.
Profile
Publication details and official links
- Publisher
- Elsevier
- ISSN
- 2212-5345
- Electronic ISSN
- 2212-5353
- Society / sponsor
- Japanese Respiratory Society
- Official links
- Journal homepage ↗LetPub
- Submission system ↗Publisher website
- Special issues ↗Publisher website
FAQ
Frequently asked questions about Respiratory Investigation
What CAS zone is Respiratory Investigation in?
In the 2025 upgraded edition of the CAS Journal Ranking, Respiratory Investigation is in Zone 4 of Medicine, and in Zone 4 of the minor category Respiratory System. In the 2026 Xinrui edition it is in Zone 3 of Medicine. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of Respiratory Investigation?
The journal's website gives an impact factor of 2.1; this is the journal's own figure, as LetPub lists none for it; CiteScore 3.1, h-index 54.
How long does peer review take at Respiratory Investigation?
Based on the dates recorded on 105 articles published between October 2024 and October 2026 (the last 24 months), the median time from submission to acceptance is 111 days (interquartile range 72–137 days); the journal's website gives an acceptance rate of 44%. 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 are the manuscript requirements of Respiratory Investigation?
According to the journal's author guidelines: Abstract: ≤ 250 words; Keywords: ≤ 5; Manuscript length: ≤ 3,000 words. A model extracted these from the author guidelines and each was checked against the text; check the latest version on the journal's website before submitting.
Where are the editorial board members of Respiratory Investigation based?
Of the 81 board members whose country the journal's board page names, none are in mainland China; the countries named most often are Japan (65), United States (5) and Italy (4). Counted from the institutions listed on the board page; for reference only.
Which databases index Respiratory Investigation?
According to LetPub and DOAJ records, Respiratory Investigation is indexed in ESCI and Scopus. The journal's website also lists PubMed; that list has not been checked against each database.
Is Respiratory Investigation open access, and what is the APC?
Respiratory Investigation is a hybrid journal. For open-access publication: APC about USD 3,000.
Sources and updates
The facts on this page come from LetPub, Publisher website, OpenAlex; 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 2026-08-25). Last updated: .